Re: lifting 2001 grand cherokee laredo
I have a 2000 GC Laredo with a KOR 2-3/4" lift with 265/75R16 Cooper STT. On road, no issues, Off road in severe articulation, some rubbing but at slow speed it has never been a problem. I previously ran 255/70R16 Cooper ST before the lift but I had the Up Country OEM suspension package (+1" lift over stock). No rubbing concerns with that combination.
I doubt very much you could use any Wrangler parts on the WJ. But I am not a back yard mechanic.