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QA1 complete rear suspension conversion with a 9" housing for 1964–1966 Mustangs is an all-in-one 4-link solution that includes a fabricated 9" housing, single-adjustable coilovers with 18-click tuning, and heavy-duty components rated for high power. The heavy-duty 9" housing is rated to 800 HP, paired with 31-spline 1541H alloy axles rated to 650 HP, and includes features like drain and fill plugs, adjustable ride height to 3" lower, 5x4.5" bolt pattern and hardware for a comprehensive upgrade.
QA1 64-66 Ford Mustang Rear Suspension Conversion System - 9in Housing Single Adj. 130lb/in
