this guy is right man just dump it and get the v8 like i said a long time ago nobody keeps there first car like your plannin on doin just let it go tim to start fresh now again. and also like he said if u want 4-500hp the m6 will hold but its not gonna happen on a 800hp motor and as much as it sounds easy its gonna take more cash than u think to get over 600hp and have it handle the power