i am pretty new to this but can somebody tell me if this dual exhaust bolts on to the old exhasut or do i need new headers and have to take of cat. conv. http://www.racepages.com/performance...3&brandid=2021

 

it looks like it should bolt on after the cats.

 

On mine i was welded on AFTER the cat. That bein said I went back to a single in single out because I found it sounded, looked, and responded better than a dual. Now imo you woulnd need a TRUE dual setup with headers: 2 pipes 2 cats etc....hope it helps