Borla 00-04 Porsche Boxster 3.2L 6cyl MT SS Catback ExhaustEXCEPT 5 Speed Transmission. The Porsche Boxster & Boxster S with nice power and a mid engine platform, are great handling sports cars. BORLA R&D engineers developed a 1. 75" diameter mandrel bent high quality T 304 austenitic stainless steel package with emphasis on weight, as the exhaust is positioned significantly back at the very rear of this vehicle. The BORLA Cat Back system managed to come in at less than half the weight of stock, adding to a