This newly designed Sideflow - Sidewinder Exhaust system for all early VW Type-2 Bus models is Constructed of HIgh Quality Stainless Steel with 1 5/8 inch tubing and features a 4 into 1 merged collector for maximum exhaust flow and horsepower. TIG welded for longer lasting strength and great looks. This system includes a Stainless Steel V-band clamp Muffler. Gaskets and hardware are in the box for easy installation. This is a competition system and cannot be used with heater boxes. Fits all Split Window VW Van - Bus to 1967 when a 1600cc style high performance engine has been installed.