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Machined steel single groove for GM Gen III/IV applications
these Race hydraulic flat lifters for Chevrolet Small and Big Block engines feature tighter tolerances
Arms feature steel cross shafts
If you're looking for that original Flowmaster sound this is the muffler is for you
Compressed operating thickness is
Gibson MWA Muffler 3" Center Inlet 3" Offset Outlet 9" Diameter Body - 14" Long R01J003XXXXXL Machined steel single groove forGibson MWA Muffler delivers Maximum Sound and the Best Muffler Flow PERIOD! This Straight thru design promotes exhaust gases to flow at the highest rates flowing only 3cfm less than a 3 in. straight pipe, improving power potential while keeping interior drone to a minimum. The MWA muffler has NO internal packing or weak baffles, allowing it to maintain a lightweight design with a unique and powerful sound. The MWA muffler is 100% Made in the USA and