1971 Mustang · Restoration Cost Estimator
A 1971 Mustang restoration costs $20,000 to $250,000+, all-in.
The 1971 was a clean-sheet redesign — bigger, heavier, and with a narrower parts ecosystem than any earlier Mustang. Parts supply matters more here than on any other year. The Boss 351, offered only this year, is among the rarest classic Mustangs ever built. Pick your body, condition, and scope. The estimate is itemized.
Researched by Dorian Quispe · Owner, 1967 Mustang Fastback · No parts to sell.
Pricing reviewed by Dorian · April 2026
Year Range
Body Style
Current Condition
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We'll calculate your all-in cost vs. current Hagerty market value.
Have fresh paint or a rebuilt engine?
1 of 4 — pick a Body Style
What makes the 1971 different
Ford stretched the 1971 Mustang onto a 109-inch wheelbase and added four inches of length over the 1969–1970 cars. The result was a more imposing machine — and a different restoration proposition. Almost no body panels carry over from earlier years, which means the deep aftermarket support that makes 1965–1970 restorations relatively straightforward does not apply to the same degree on the 1971.
The Boss 351 replaced the Boss 302 and Boss 429 in one model. Built for SCCA competition, it used specially prepared 351 Cleveland heads, a solid-lifter cam, and a close-ratio 4-speed that made it the most powerful street Mustang of the era by output-to-weight standards. Only 1,806 were built. Finding a correct, numbers-matching car is the hard part. Restoring one correctly requires a specialist who knows the Cleveland engine platform.
For a standard Mach 1 or fastback, the restoration path is more conventional but slower on parts sourcing than earlier cars. Repro panels exist for most body sections; interior trim is available from major suppliers but sometimes limited to certain colors. Budget conservatively on sourcing time for any trim-correct restoration.
Boss 351 and Mach 1 restoration cost premium
The estimator numbers cover standard 302 and 351 cars. Boss 351 and Mach 1 owners should treat those totals as a floor — the premium on these cars comes from scarcity, specialist knowledge, and documentation sourcing.
Boss 351 — $20,000–$60,000 over a standard 351 build
Only 1,806 Boss 351s were built, making this the rarest of all Boss Mustangs. The engine used specially prepared 351 Cleveland HO heads with revised ports and chambers, a solid-lifter cam, and a close-ratio Hurst-shifted 4-speed. A correct concours rebuild requires a specialist in the Cleveland platform — budget $15,000–$30,000 for the engine alone. Correct chassis documentation (Marti Report), date-coded components, and period-correct paint codes (Grabber Blue, Grabber Green, Grabber Orange) are mandatory at any serious show. A correct, numbers-matching Boss 351 restoration runs $150,000–$200,000 at the concours level.
Mach 1 — $2,000–$6,000 premium
The 1971 Mach 1 continued the SportsRoof-exclusive package with the NASA-style hood, honeycomb rear valance, and unique striping. 1971 Mach 1 trim pieces are year-specific and not interchangeable with 1969–1970. Correct front spoiler, door striping, and hockey-stick stripes are available through NPD and Scott Drake but require verification — reproduction quality varies. If the car carries the optional 429 Cobra Jet (Q-code), add the engine premium separately.
Is a 1971 Mustang a good project car?
The honest answer: it depends on what you're after. The '71–'73 platform has a structural disadvantage that no amount of enthusiasm fixes. Values are lower than the 1967–1970 cars and the aftermarket is thinner, which means your cost-per-dollar-of-car-value is higher at show or concours scope. Running the math on a $35,000 SportsRoof plus a $80,000 restoration gives you a $115,000 investment in a car the market prices at $50,000–$55,000. That gap is real.
Where the '71 makes sense: driver-quality builds, restomods where the larger engine bay (it fits a 429 without modification) is an asset, and Boss 351 provenance plays where you own a documented car and plan to hold it long-term. Values on authenticated Boss 351s have been rising. If you have one and it's real — document it, restore it, keep it. If you're shopping for a project and the '71 is competing with a '68 fastback at the same price, the '68 makes more economic sense for most restorations.
Use the estimator above to run the numbers for your specific scope. Driver-quality restorations on standard 1971 cars are where this platform makes the most sense.
Parts sources for the 1971–1973 platform
Interior & Trim
CJ Pony Parts
Interior kits, weatherstripping, and trim for the 1971–1973 platform. Verify color codes before ordering — trim availability varies.
Sheet Metal & Body
National Parts Depot
NPD has the strongest 1971–1973 sheetmetal coverage. Floor pans, trunk pans, quarter panels — start here before sourcing elsewhere.
Engine & Suspension
Summit Racing
351 Cleveland is an aftermarket darling. Summit has deep coverage for both stock rebuilds and performance builds.
Transmission
Modern Driveline
T-5 and Tremec conversions for the 1971 platform. Most FMX-compatible upgrades apply here.
Affiliate links — PonyRevival earns a small commission at no cost to you. These are the suppliers I'd actually use; no one paid to be listed here.
Read the full cost breakdown
The estimator gives you totals. The guide explains what drives each number — shop rates, labor hours, and the hidden costs that show up mid-project.
Classic Mustang Restoration Cost Guide →What is a finished 1971 Mustang worth?
The 1971–1973 cars trade on BaT, but volume is lower than the classic-era cars. The SportsRoof is the desirable body — coupe and convertible data is thin. These values are directional; use them to understand the ceiling, not to set expectations for typical results.
| Body Style | Driver-Quality | Restomod |
|---|---|---|
| Hardtop Coupe | ~ $13,000 (limited data) | ~ $22,000 (limited data) |
| SportsRoof | $30,000 | $55,000 |
| Convertible | ~ $22,000 (limited data) | ~ $38,000 (limited data) |
Based on 16 BaT sold listings, April 2025–April 2026. Standard-spec cars only — Boss 351 and Mach 1 R-code cars excluded. Sample is thin; treat values as directional medians. Updated quarterly.
Category cost guides
Deep dives into the categories that blow up every budget.
Category Guide
Engine Rebuild Cost
289 to Boss 351 Cleveland — machine shop rates, core risk, and the stock-vs-performance decision.
Category Guide
Rust Repair Cost
The most unpredictable budget item. Floor pans to frame rails — what each zone costs.
Fuel System
Signs Your Carb Needs Rebuilding
Eight symptoms, the rebuild-vs-replace decision, and cost ranges for parts and labor.
Browse by year
Each year page pre-loads the estimator with the right era defaults.
No email required. No paywall. National rates (~$125/hr). CA/LA runs ~30% higher.