is probably going to be your best choice and give you the best price. I will be ordering my 4" lift kit from them. They're pretty active on the www.isfja.org
boards, and I've bought some small things from them. Nice guys.
As far as the biggest tire on stock wheels and suspension, it'll be 31x10.5.15's. That's what I'm running on my 89 GW. Cooper "American Classics" made for NTB. Got a competitor price match (to some Goodyears at Wally World) to $50 per tire. Usually they're $89 or $99. Not aggressivve tread, but pretty good for the road. But depending on your own wag sag, the 31"s might rub a little.