I know i'm late to the party but i've been tossing the awd idea around for a few years now. the tahoe and escalade wheelbases within a 1" of the wagon wheelbase so my plan was to buy a truck with a beat up body and do the body swap. For me i like that option the best because i can then use all the truck electronics and systems. But from watching the awd cutlass guy explain his build on hoonigan doing the subframe setup would work well too. He sectioned in a trailblazer ss frame and used the trans, and front diff but factory rear end. But my end goal is to make my wagon reliable for cross country trips so im gonna do a frame swap.