I JUST PURCHASED A MARK 8 ABOUT A WEEK AGO,FIRST OF ALL I DIDNT REALIZE THESE CARS HAD THIS MUCH POWER,MAAAAN.I ONLY HAVE TWO QUESTIONS,FIRST OF ALL I GET A HARD SHIFT INTO SECOND GEAR,IT SHIFTS ON TIME BUT ITS A POWERFUL SHIFT SOMTIMES IT CHIRPS THE WHEELS LIKE IM RACING.SECOND QUESTION,WHATS THE LIMIT ON THE HEIGHT OF SOME RIMS THAT I COULD PUT ON IT,I GUESS WITH THE AIR SYSTEM LOWERING SOMETIME I PROBABLY COULDNT GO TO BIG. AN IS THERE A COBRA ENGINE REALLY IN THERE?