I think your best bet is to go to a local muffler shop, and have them do custom true duels with 2.25 pipe. Have them design you an "X" pipe, and hang the mufflers right under the seats, you can buy a heat shield for the left side, but its really not needed. I did this, used AP Mufflers, and aluminized 2.25 pipe, with the custom X pipe, and stainless 4" tips cost $550.00 installed. I also replaced the rear valance, which was another $86.00. The performance difference was noticeable, and the sound is great. This method I feel is the best way to go, and believe me, i have had Magnaflow single exhaust, and the difference is like night and day. All the other "Duel Exhaust Kits" are with a "Y" pipe, which is not true duels, or as in the case of the Flowmaster exhaust, this is true Duel, but is very expensive, and the end result will be the same. Good Luck with what ever you do, and most importantly have fun!