No, they won't bolt right up. There is interference with the front drive shaft, or at least that's what I've always heard. I'm sure a good muffler shop could make it work. What are you proposing, though? Are you saying your van with the Banks is 2wd and you are considering a Quigley 4x4 conversion?
Well i am buying a 2012 v10 guigley and wanted to trade exhaust with the 2002. I never noticed any differance on 2002 when i installed the Banks system, but never had any problems with it either.
Maybe just change out stock muffler?