[fly-n-j]

To answer your question about the differance in the two frames- Yes they are drasticly different. The coil rear frame is about 6-8" wider over the axle to accommodate the coils. It starts getting bigger just behind the rear cab mounts and reaches it's widest point just over the axle and then it tows back in as it heads toward the rear bumper. The leaf spring is a strait shot viewed from the top down, from cab mounts back. The only way, in my opinion, you could switch to leafs, is to cut the coil frame out and replace it. I did the reverse of this (leafs to coils) to mine to gain the ride of the trailing arm rear end.