May 03, 2016· Ok guys, I've got a 2006 Tundra TRD 4x4 4.7L Double Cab. I'm interested in the bilstein 5100, I'd like to lift the front to the top which is 2.5" A few questions, 1. Do i need to do the diff drop at the 2.5" ? 2. Should I install 1" rear blocks in the rear? 3. Has anyone had any issue with leaking CV boots? Thanks for the Info guys!