Competition - Proven, these systems are designed for maximum horsepower and built to take the punishment of off-road competition. Features a merged, spring-attached collector and are available in 1 1/2" or 1 5/8" tubing. Choose Chrome, Black or Ceramic Coated finish. Available with straight or U-bend stingers. Our Turbo Muffler Kit is sold separately for street or controlled area use. Turbo Muffler Kit supplied with Collector. All systems eliminate heater boxes. Fits 1300-1600cc Type 1 66-73 based engines.