33's are fit in 2 common ways:
1. 4" suspension lift with 2" front bumpstop extension and ~2.5" rear bumpstop extension
2. 2.5" lift + 1.25" body lift, with 1" front bumpstop extension and ~1.5" rear bumpstop extension.
Alternatively, you could add 2" of lift alone, with 2" front and rear bumpstop extension, but you don't gain much uptravel over stock. Gaining uptravel is half the point of a lift, but if you don't take it off-road, maybe you're ok with that.
if you don't want to destroy your tires, you'll need some method to reduce the backspacing. this is most commonly done by new wheels, with 3.75-4.25" of backspacing, or 1.25" Spidertrax wheel spacers.