Vintage Speed Stainless Steel Sports Exhaust System, Standard Tail Pipe Type 4: T2 Bay (1973-1979), T25 (1980-1985)Vintage speed exhaust system with a standard type tail pipe for models with a Type 4 engine 1700 2000cc Features Fully TIG welded, all flanges, no gas leaking. #304 stainless steel muffler with single #304 polished tail pipe 304 Stainless steel Flanges can be match ported Build in M18 nuts, for tuning when use O2 sensor Fits under rear apron for type 4 engine Baywindow bus pre1979 Fits under rear apron for T25 with 2. 0 Type4 Aircooled (80 83) Fits