DynoMax Bullet Racing Muffler - 4" In, Out - 5" Diameter - 12" Chamber Length, 16-1/2" Overall Length LY23371 They have a female 1/8"

They have a female 1/8" NPT for adding any AED Fuel Pressure Gauges

Complete with washers

1967-1972 Fargo W200 Pickup

Internet Updateable Using Free Ignition Update Software

DynoMax Bullet Racing Muffler - 4" In, Out - 5" Diameter - 12" Chamber Length, 16-1/2" Overall Length LY23371 They have a female 1/8"DynoMax Bullet Muffler Compact, round design for tight ground clearance. Moderate sound control RACE USE ONLY! Center Inlet Center Outlet Light weight compact design 100% welded design for maximum durability CRF Technology which helps provide up to a 4 dbA sound reduction, on most race applications, while maintaining a deep race toneDynoMax Performance Exhaust the power speaks for itself. Product Description: Muffler Race Series Bullet 4 in Center