so my friend works at a muffler shop..he can bend me a 2.5inch catback pipe if im interested in doin a custom exhaust for like 100$..i was thinkin of doin this then just strappin on a nice muffler w/a resonator and a tip..ive got a 2.5 catless DP so i figured if i can get the catback custom made for around 300$ y not? cheapest catback exhaust ive found so far is like around 500 anyone think this is a bad idea or what? im lookin for ideas on mufflers too..nothin ricey..