I just bought a 2004 mazda 6 i ( 4 cyl ) last friday, anyways I was really impressed by the torque the mazda 6 has, its an automatic/manual, which i know u guys are like pshh. but that went well with my budget. yes i no the manuals are cheaper, just happen to find a good deal. So, i have a dent in my rear buper, and a scratch on the passenger side door. I'm gonna probably replace the bumper, or some how fix the dent. I also want to go more preformance, then make it look good. So i was thinking of getting an exhaust system first to get rid of all the back pressure, but then there's also the intake system. So what do u guys recommend i should do first?