I have some information I thought some of you might be interested in when doing work or building up your vehicles. Unfortunately it only applies to 1999 and newer vehicles. This is the site you need if you're doing custom builds or modifications and modifying frames, etc.. Enjoy. https://www.gmupfitter.com/pdflists/view/6

 

Good find! I've used that site before, but I forgot all about it.

 

Lots of nice stuff in there. good find.