These headers come with 1 5/8" primary tubes and 2 1/2" collectors. They come polished ceramic coated for corrosion resistant and threaded flanges for emission controls hook up, steel studs and self locking nuts.
Lethal Performance 96-04 Cobra/Mach-1/GT Off-Road X-Pipe for Mac LT Headers
All new at Lethal Performance are these high quality Aluminized Steel X-Pipes made specifically for the 4V Mac Longtube Headers. We took it upon ourselves to produce an X-pipe because no one at this time offers one for the Mac Longtube Headers. People are limited to an H pipe or Prochamber. From our experience we know the X-Pipe makes great power and is backed up by an awesome sound so it just had to be done. Our mandrel bent aluminized steel X-Pipe bolts right up to the Mac longtubes.
The Lethal Performance Shorty X-Pipe is completely assembled and includes the hardware needed for a quick and easy bolt-on installation.Lethal Performance X-Pipe Features: