I've made numerous modifications to my 1965 C10 SWB's suspension and have written some how to threads also. Here are some links:

Frame Notch Based On Strength: http://talk.classicparts.com/showthread.php?t=20312

Upper Rear Shock Relocation 63-72: http://talk.classicparts.com/showthread.php?p=88325#

Track Bars, The Short and The Long Of It: http://talk.classicparts.com/showthread.php?t=14368/

Rear Lowering Springs - Lessons Learned: http://c10forum.com/forum/showthread.php?t=17219

And my build thread has more details of suspension changes and other assorted bizarre modifications. yahoo
Lakeroadsters' Build Thread 1965 SWB Stepside: http://talk.classicparts.com/showthread.php?t=13928

Hope these help! thumbs_up

John

In the Stovebolt Gallery ~~ "The Orange Crate" 1965 C10 SWB Step Side Build Thread

Inspired to be different. Different in a way of my own, not in a way that others strive.