Flowmaster HP-2 Series Muffler - 2.25" Inlet, 2.25" Outlet - 18" Case - 409S Exhaust Port Block-Off 1955-1955 GMC 280-22

1955-1955 GMC 280-22

Includes two link mounting locations for fine tuning

Ford EFI Intake Flange

Fittings / Gauge Included

Weld in 1/8" NPT female threaded bung

Flowmaster HP-2 Series Muffler - 2.25" Inlet, 2.25" Outlet - 18" Case - 409S Exhaust Port Block-Off 1955-1955 GMC 280-22Constructed with an 18" long, painted 409S outer shell, and 409 Internal components. Available in 2. 00", 2. 25", and 2. 50" inlet outlet sizes. The 409S HP 2 mufflers have a case length of 18 inches and a 4. 00 X 5. 50 inch width. Due to their Cool Shell Technology they can be placed in virtually any location under the vehicle. The 409S HP 2 mufflers feature a painted 409S outer shell, and 409S internal construction. Available in 2. 00, 2. 25, and 2.