You found the right place for the best information!
Sounds like you have part of the stuff right.
The bodylift information that you have is "old school" and wrong in this case. The bodylift on these trucks offers more benefits than problems. A body lift raises the center of gravity less than a suspension lift and therefore offers less body roll during cornering. There are many threads showing the access to the transfercase switch, sparkplug #3, the transmission servos, and floorboard clearance over the cat. The list goes on and on. Add to that the clearance for bigger tires and the fact that it now looks like a truck and you have a win for installing a 2" body lift.
T-bar tweak, Some adjustment is usually needed. Many trucks are set very low to begin with. The ride height specifications are on our website (click the logo above)
Adjust to maximum Z height and you will be just fine.
Running 31" tires on this combination requires a small massage of the pinch weld at the back of the front fender with a BFH. Rubbing the frame on a turn happens too.
If yours came with the 70 series tires I will assume you have the 3.42 gears and no locker. Sticking with no more than the 30x9.50 is a good idea. Look through the readers rides thread
. You should find some photos of trucks with the combination that you seek. There are also some pictures in our old gallery
My truck is sitting on 31" tires in those. Mark's truck - AZS10Crew was a perfect example. Too bad we lost most of his photos
Hold on to your wallet. A look around here will empty it for sure!