Randii, I am sure that it's possible to get through the Rubicon without major mods. But it would be not a fun, especially in a family vehicle, which is supposed to have little (or not at all) body damage. At least, not kind of fun I like, and what the majority of the trail-taken SUV owners like.
Also, from my point of view, there is no sense to run a trail if I cannot get through it completely. This is why I've never tried the Rubicon. It's rather silly and self-humiliative to make a U-turn half-way.
May be, we can have two different runs in different times.

Oleg
Axiom 4WD 2004: OME shocks, 32" BFG Mudders, RockSliderz, OME929+2" spacers, Stinkyfab bent RE rear links, front ARB locker, rear No-Slip locker, DOR front axle lowering kit, custom middle section skid plate, IronMan torsion bars.
Deceased Rodeo'02 4WD.