Pirate Mfg SBC Small Block Chevy Hugger Headers Black Steel 283 305 350 400 Heavy Duty Brand New 1955-UP Black Small Block Chevy Hugger Headers Heavy duty with 1 5/8 Inch tubes and 3/8 Inch thick flange 2 1/2 Inch collectors and 2 Inch reducers Will not work with angle plugs Set include headers, bolt on reducers, exhaust gaskets, collector gaskets, and all necessary bolts