we are making some good progress on this rig.
just to elaborate, the frame is 3 x 5 box - 3/16 wall...w/ 1/4 wall cross members at each end ("bumpers")
front springs are OME YJ springs ..... rears are OME Euro-spec Isuzu Dmax pickup
rear axle is a CUCV 14 bolt - 4.56 rear w/ Detroit
front is a dually Chevy D60 (4.56) converted to single wheel w/ new GM hub assemblies
the crawler in the pic is a red label..........it's my "mock up" 40 we keep around the shop. I think the latest decision on this truck is 40" Iroks on Trailready Beadlocks.
as far as the wheelbase goes................this thing is short....we tried a few different WB's but 100 seems to fit the body the best....... so that is where we are.