yes generally to fit 33's with that kind of clearance will be around 4". what else would work is if you could get a stock measurement and see if the diffrence is about 4".

tell you what; when i had a 4" trailmaster lift and 33's the cleance for my back tire was i belive 7.5"- ish. that was with no weight in the back other than an aluminum truck box and it sat pretty level with the front.

92' Pick-up, SAS, gears to make her crawl, 37's , bullet proof motor, and alot of time invested.
06 CRF450R one mean roost flinging machine