[SCOTI]

Originally Posted by 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.

While I suppose anything is possible, I know 2x4 vs. 4x4 frames are different. 2wd leaf vs. coil frames are the same (I'm basing this statement on the fact that I've had one of each sitting in my driveway @ the same time).

The leaf spring frame got wider above the rear axle just like the coil frame. It also had beads in the frame where the leaf hangers were placed where as the coil did not. The leaf frame has different shock mounts & did not have the c.member that mounted the shocks & reinforced the coil mounting area of the frame.