here are the mods......short ram intake and a race filter, if there were anything else done to it, it was before i bought it. it came from a dealership w/ 110,000 miles on it. We raced 2 times, first time i was taching low and missed 2nd! First time i was tacking 6 grand and we were dead even when he reved his truck to me it shook my whole car, but anyways i took him in 2nd, really really slow pull from the guy, he let off when i was midway through 3rd.