Generally, the 33's will clear at ride height with a 3" SL, but rub on compression/offoading...as there's no room to stuff them w/o a BL.
The rears tend to have plenty of room, almost all the clearance issues are the fronts, and mostly because they need to turn, etc, too.
_________________________
- TJ
2001 Xterra '03 VG33, SE 5 spd, 305/70/16's, Revolvers, UBSkidderz, Doubled AAL's, 3"SL/2"BL, winch/bumpers, skids, sliders, OBA, Snorkel, pine stripes....
Friends don't let friends drive stock.
http://www.gifsoup.com/view/501230/tj-tackling-crawlers-ridge-o.gif