QA1 65-72 Ford F100 Rear Coil-Over Conversion System - Medium - Double Adjustable (200lbs/in)Brand QA1 Part Number R220 200 Category Suspension Coilovers Condition Brand New Original Manufacturer Packaging For the rear of 65 72 F 100s, QA1 engineered a unique torque arm design that maximizes performance without the inherent binding issues of other systems, all while achieving a 4" to 7" drop. This bolt in system also offers unprecedented adjustability: the panhard bar, torque arm, trailing arms, bracket mounts, and shocks are all adjustable,