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1979–93 Fox-body Mustang chassis

3 aftermarket chassis and subframes from 2 builders.

Detroit Speed, Roadster Shop

Aftermarket chassis

Prices checked Oct 2, 2026

Compare Builder & product Type Front Rear Price
Detroit Speed Fox Body Short Long Arm Conversion System (032096) Suspension kit SLA conversion: tubular arms, forged uprights with hubpacks, JRi coilovers, sway bar, rail inserts Not included $5,699.95–$7,299.95 Non-adjustable to double-adjustable (category listing; product page showed $5,678.95 for… Source
Roadster Shop SPEC Foxbody Mustang Full frame New SLA IFS, RSF2 forged aluminum spindles; strut towers eliminated Ford 9in, parallel 4-link $16,995 Base price (starting configuration, before options) Source
Roadster Shop 1979-93 Mustang FAST TRACK Full frame RS Fast Track IFS, 58.75in track, C7-based forged knuckles, sealed hubs, RS SV by Fox coilovers, 1.25in splined sway bar Large-dia parallel 4-bar, Strange Ford 9in, S/S 31-spline axles; Fast Track IRS optional $22,495 From $22,495 (base) Source
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Reading these prices

Starting prices aren't always comparable. Some include suspension, steering and brakes; some are a bare frame or front clip and the rest is extra. Check the Front and Rear columns and each product's notes before comparing totals. "Price on request" means the builder quotes each build. Confirm with the builder before you order, and send corrections through our contact page.