you really shouldnt even have to crank your torsions or replace them, ive got a 2" body lift and im settin on my second set of 33's, i had the back sag also, i went to advanced auto parts and they had some solid cast iron 2" blocks to level the rear, i also went ahead and did a U-bolt flip, marlin sells the kit but i also made my own out of some 5/16" plate with a hot wrench and got a set of shock mounts off of ebay. your project sounds just like me 2 years ago, currently i am a few parts away from being down with my SAS, cant wait and it will be ready for gilmer in Januar
with the 33's the rubbing was very minimal, they would only rub if i was turned full lock and hit a bump, other than that they were good to go.
