I have a 94 yukon pretty much stock little over 100,000 miles. she has been babied though. I am looking to do a level and body lift to run 33 s. eventually get a locker for the rear. winch on the front with a minimal bumper. maybe duals with decent mufflers. mild wheeling not too much mud, lol. Im thinking a few engine mods nothing drastic. I cut muffler off right before muffler wife thought i was nuts, lol. it is a little roar. needs a slight tone down, maybe flowmaster 10 series ?