This cat back exhaust system will bolt up to a BA, BF XR8 and BA GT. It is manufactured from mild steel and has duel 2.5 inch pipes with two good sized mufflers, it comes with duel tips attached. This system will give a great sound that others will admire. The X force system is a proven performer on the dyno and race track. This system will also come with a y piece not shown in picture. Picture displayed is a stainless steel version. 00042719