This coilover conversion for the Ford F250/F350 4WD utilizes the factory coil spring bucket for a fast, easy installation with an affordable price. Dirt Logic Coilovers are constructed with a Stainless Steel body and NitroSteel(R) piston rod for maximum corrosion resistance. Coilover Conversion; 4 in.; NO WHEELS/TIRES; 42. WILL NOT FIT GAS MOTORS.; 206. DOES NOT WORK WITH BUDGET OR BASIC SYSTEMS.