I think it would be better to bob the rear. Because as you lengthen wheel base, it gets easier to high center on obstacles and whatnot. And from some of the pictures i've seen of your truck you've gotten pretty darn close! if not actaully getting high centered. So my vote goes to bob the rear. You wouldnt really get much out of longer wheel base, bigger turning radius, but who wants taht? Only advantage would be, say, mud holes, and SOME obstacles. But cons outweigh pros i'd say for longer wheel base.