this is the one i put on mine. i got it off ebay but from a different vendor but same price. they come in different sizes, i picked this 1 just to show what it looks like. mine was 2.5".
the stock exhaust has a h pipe design and after my res and sec. cat delete i feel (purely my opinion) that the x pipe smoothed out the sound and mellowed it a bit.

MAGNAFLOW TRU-X 12" SS CROSSOVER PIPE 2.25" ID 10790 : eBay Motors (item 300411108963 end time Apr-24-10 14:16:41 PDT)