I run 33x10.50x15 BFG AT's on my 94 pickup. I have OME shocks on the front and rear and aftermarket springs on the rear. Also, I'm running SDORI BJ spacers on the front. Haven't switched to the ARB torsion bars yet, but plan on it since my stock ones are now 19 years old. If I were planning on adding a winch I would definitely upgrade the torsion bars beforehand as I already have some sagging on the front after a t-bar crank. They're old so...
I didn't have to trim anything or flatten the pinch weld. I have very minor rubbing at full lock either direction, but I don't do any sort of hardcore wheeling so it doesn't concern me.
Oh, and I've seen 4Rescue's 4Runner in person and it actually sits very level, it's just that photo that makes it look lower in the rear. In fact, I think it actually sat a little higher in the rear.
Here's my truck before with stock suspension and 31x10.50x15's:
And as it sits as of today 12/29. IF you look real close you can see the front sits a little lower than the rear: