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Muffler (Left) Body Length: 14
Inlet Diameter: 3
1998-2004 Buick Regal
2007 GMC Sierra 1500 Classic
• Max increases of up to 14 hp and 21 lb-ft over the stock exhaust at the wheels
Hooker Exhaust Manifolds 8501HKR TBD Muffler (Left) Body Length: 14Overview Hooker cast iron exhaust manifolds have been designed to hug close to the engine block so they fit into a wide variety of replacement and engine swap applications. Their contoured design aims the exhaust directly at the exit port for improved flow. Being cast iron means they will provide years of leak free performance with less under hood noise than traditional headers. Plus, their shorty design means you can route exhaust tubing close to
