My old 2001 Silverado I was running a 3 inch body lift with slightly cranked torsion bars, no trimming and I cleared a 35" tire 12.5" wide and didn't rub at all, just for ***** and giggles before I installed the body lift I maxed out the torsion bars on stock keys and I could clear the 35's with minimal rubbing and no trimming at all. This of course was on stock offset wheels

 

Small lift and big tires stuffed looks like *** , stick with your 33s the truck looks good as is

 

Ya its not getting any higher right now might do a wheel change but dunno for sure