i see a lot of our cars with no exhaust tips or a single exhaust. n they have like a staight edge on the rear bumper. theres no slots from the stock exhaust. now i want that too because i have no tips. i asked one guy how he got it like that n he sayed he bought it aftermarket. well im not down for all that. i heard that u can roll up the section in the middle. is it possible? if so how do u do it?