Yeah, I'm a new guy to this site looking for some input or advice. I am looking to build a truck a 85' or so 3/4 ton crew cab. I've looked around and I can find 2wd crew cabs but not any 4wd. I KNOW it would be a lot of work but can a 3/4 ton 2wd, AT chassis be converted to 4wd. If you remove all the 2wd suspension does the 4wd suspension bolt on with minor or major mods? Ive heard that the rear spring perches have to be moved. I've read that 2wd cabs equiped with automatics have a smaller hump than 4x4's. Is this a problem for transfer case clearance on a crew cab? Also, I want to chop the frame down and set a short bed on it. I 've seen this done on reg cab frames but I haven't seen a crew done. Was curious how bad if any does this weaken the frame if properly welded. I want to tow a 6000lb 5th wheel with the truck and would rather have the short box but wasn't sure if this would weaken frame to much. Sorry if I rambled to much just had several questions before buying truck(s) to start a project like this..Thanks in advance for any input or suggestions!