Personally exhaust are some of the biggest waste of $$$ to me atleast... i would just do a custom 2.5-3" cat back to a single flo master muffler makes good sound and does the job for under 200$

i have that done and i made like 3-5whp & 11lbs or you can pay 500+$ for some other setup to yeild the same or less power... let me know if you need a place to take it have a great exhaust shop.

* i would recommend the TT dp and hi-flo cat though (you don't want to play around w/ cheap dp)