Our 65-75 Cadillac Extreme rear suspension system is a 100% bolt-on OEM style kit designed to lay a 29" tall tire. The system improves upon the factory 4-link suspension with strengthened adjustable tubular link arms and incorporates bolt-on bracketry that use compact sleeve bags and relocates the shocks for increased suspension travel. A bolt-on c-notch allows a maximum drop with minimal notching of the frame rail. Whether you are looking for the ultimate slammed stance or merely upgrading worn out stock components, our kit has you covered. The kit includes the upper and lower link bars, axle bracket, upper bag bracket, c-notch, KYB shocks and all required hardware for installation.