You have already talked to RE and may want to consider their 4.5 inch extreme duty spring lift. It'll allow for the 33s. I've got one on order (they're out of front springs) and plan to put on 33s when it's on. The kit seems pretty complete, as well it should be considering the price. FYI, Central 4 Wheel Drive sells the kit for about $120 less than RE themselves.
<img border="0" title="" alt="[Eek!]" src="eek.gif" />
'92 YJ, SOA w/ 35x12.5 X-terrains,RE quick-discs, Warn HS9500i, Detroit Electrac rear, ARB front, 4xDoctor rocker guards, AGR Steering, Borla Header & exhaust, Atlas II
Many bloody knuckles, Best of all, my wife luvs it too!!!
***Coming soon*** Chevy 350 V8 swap