A guy that works with me has a 02 grand cherokee laradeo with a 4.7 and we raced today. i took him up to 1/4 mile but he was gaining really fast and just about to pass me, he told me he was spinning until 70 mph and its an auto stock. I have a problem with my floor carpet and mudmats in my truck, sometimes i think ive got it to the floor but when i push even harder it kicks down again, does anyone else have this problem?