Flowmaster HP-2 Series Muffler - 2" Inlet, 2" Outlet - 18" Case - 409S H769001S 1975-1978 GMC G25

1975-1978 GMC G25

and test equipment

stronger ring center

Also great for V-Twin style racing engines

1999-2000 Chevrolet Silverado 2500

Flowmaster HP-2 Series Muffler - 2" Inlet, 2" Outlet - 18" Case - 409S H769001S 1975-1978 GMC G25Constructed 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.