QA1 Coilover Overhaul Kit R231-200With this all new, engineered from scratch rear system, 1973 1987 C10 owners can add modern performance to a pickup that was designed for utility all without removing the bed of the truck. QA1 engineered a unique bolt in torque arm design that maximizes performance without the inherent binding issues of other 4 link systems. This provides superior control over suspension movement, resulting in a smooth ride and great handling characteristics. Dialing