MAC Pro Chamber H-Pipe for Stock or Shorty Headers, 1999-2004 GT and 1999-2001 Cobra Constructed from mandrel-bent 16 gauge tubing, these beautifully made 2-1/2" diameter pipes merge exhaust pulses in one area to create higher temperatures. This results in a boost in exhaust velocity, forcing exhaust gas to see both outlets. To you, this means more torque and horsepower. Fits automatic and manual transmissions from the headers to the intermediate pipes. Use only with MAC or OEM components for best fit and performance. |