Thanks for the response, I already have the cat, so it should just connect right up to the cat. My only thinking is that if I buy it for the car that it will be too long by the length of the catyltic converter. My exhaust stock has the cat built into the header and than the end of the header comes just beyond the oil pan, and than the rest of the exhaust hooks right into the header. But now with the gsr header on there which comes to virtually the same place as the "stock header with the cat" under the oil pan, I have added the cat right after that (to the gsr header) and had to cut down my stock exhaust just so I could fit the cat in there. I am trying to avoid cutting the magnaflow exhaust while keeping my new cat in there. I imagine that if I bought the one for car that it would reach all the way to the oil pan and bolt up there. Which probably would have me have to cut the thing down so that I can fit the new cat in there. Does anyone have anymore insight on this.