Get a nice set of factory 20's off of something newer, throw keys on it and 35's. You will have no rubbing issues at all. Rough country sells a kit for $189 that consists of keys, 4 shocks, and 3 inch blocks for the rear, as well as everything to install it. I don't know if the SUV's come stock with larger blocks but my Z71 silverado had a factory 2" block.
Nick
Nick