VW 1600 Based Type 1, 2 And 3 Stainless Steel And Black J Tubes For Standard Headers. Bug, Super Beetle, Ghia And Thing Classify as Type 1, Bus classifies as Type 2 and Type 3 is in a class of its own. 1 1/2" Stainless or 1 3/8" black J tubes fit most Type 1 and 2 standard extractors and stock mufflers, replace your heater boxes for a fraction of the cost. Type 1 and 2 Stainless Steel J tubes are internally tig welded with Heavy Duty thick flanges. Type 3 J tubes are 1 3/8" and are bent differently to form around engine tin. Add donut clamp kits sold in pairs. J tubes sold in pairs. Gaskets included.