Dude your running open pipes now and asking how loud its gonna be with mufflers? You will hear it but your not gonna get a ticket for it. Everybody and there mothers has an o/r h and flows, hell i do, cops would go crazy if they pulled everyone over that had them. Like said before spending the 250 bucks in mufflers isnt gonna get you to beat him. If i was you, id get the mufflers like you want, you will not get pulled over for them, and then wait like 2 paychecks, port intake and throw a cam on there, and you should be making some decent power, maybe mid-high 200's. Maybe some traction parts and you should be good to beat him.