Here's my build tread on GMFULLSIZE on wheels tubs and fire wall tubs.
I don't have measurements just images... and this is to lay frame on 22's
Firewall tubs...
http://www.gmfullsize.com/forum/showthread.php?t=159598&page=3
Wheel tubs...
Ok now for the window roll-up module. I got this when I purchased my alarm
but it doesn't have installation instructions but has a diagram which I don't understand. Anyone understand it, or know what to do.
Wiring diagram found here...