the answer for bolt in, is all 78-79 f-150 and bronco axles use the same style of axle housing and are 1/2 ton coil sprung and high pinion. f250/(3/4 ton) are wider and leaf spring and low pinion
cage offroad has a weld on axle tab available to use their radius arms on axle tubes that do not have the "c-wedge" on the axle tube