yea i gotta say keep the cat. if your going to get a new header, you should get a down pipe to go with it. if not its just going to create a choke point in your exhaust. if you only want to spend 200$. look into getting a used header and dp from an ss/sc. they will give you better performance. and will bolt right up, if you have the l61 engine. not sure about the lap. do you have a cat back to go with the header? sorry, forgot to look before i started this reply.
Last edited by scagnetti76; 02-06-2009 at 03:03 PM.