The previous owners had heated the springs and bent the shackle mounts to lower the truck. All the 'bushings' were shot, the springs not usable, kingpins wornout. The smarter investment, upgrade everything. We opted for a Independent Front Suspension kit and a Four link rear from TCI. We had the rear differential rebuilt by Dan's Driveline with a limited slip differential. We kept the Ford 8inch rear end, we dont plan on doing anything outside what its capable of.