Ultra 4 Specs at inception: Go fast trail riding and some ability to spend money on nicer parts
Ultra 4 Specs Now: Deep pockets, good sponsors, forget how to drive in the rocks for the most part.
:****:
That is all
Really though there is hardly a buggy out there racing U4 that is identical to another. I would say based on the last few KOH's and how many BomberFab buggies that have finished, I would be looking at those closely for dimensions and whatnot. Those buggies just work.