if ur car is a federal spec u have no precats just main cat..... flow 40 is good choice on muffler. single in dual out is they way u wanna go. basicly from there you havewhat ever style tips u want on ur car. also do u want loud or just some deep throaty tone?... i had 3sx downpipe test pipe and the flow40 and a resonator and it was still loud as shit. like i was gettin headaches on long drives lol i would go with high flow cat and flow 40 1in/2out with a resonator... go to arkansas performance exhaust off khiel in sherwood tell them a the big dude with green twin turbo 3000gt from synergy501 sent u and bring cash
