I have a Pacesetter header system #72C1213 which is specifically made for a N/A engines, this has a smaller primary tube compared to the ones for GTP car. Headers have a ceramic coating on them to prevent rust. Bought these new and never installed. Also included will be a Magnaflow catalytic converter and a Hogan pipe to attach to your stock exhaust. Primaries on the headers I believe are 1 5/8", rest of system is 2 1/2". Also included are 2 gaskets at the flange along with 3 walker stainless mega clamps. Priced to sell at $400 + 3% paypal if not a gift + shipping... Any questions do not hesitate to ask.