This cat back exhaust system will bolt up to a FG XR8 5.4 lt only. It is manufactured from polished stainless steel and has duel 2.5 inch pipes with three good sized muffler. 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. The system in the pictures is a stainless steel system. 00031161