33' tires .yank that dana running gear out and put chevy 3/4 ton with 4" leafs 2" blocks on back then you can run 36' or 38'. BUT thats what im doing on my dodge its never on the road . maybe you will get some better advice than mine good luck
the video was from last year at a local mud run it is not far from hir it's in the smal vilidge of baker-brook it is the last day of the festival that we have for truckurs hir in the vilidge