1963-1982 Chevrolet Corvette Sidetube Slip-In Mufflers Hooker 21021HKR ROL 1964-1966 Pontiac Grand Prix 389

1964-1966 Pontiac Grand Prix 389 CID

Fits: 2002-2006 Chevrolet Avalanche 1500

1997 - 2014 Chevrolet Express 1500

1964-1967 Mercury Cyclone 4

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1963-1982 Chevrolet Corvette Sidetube Slip-In Mufflers Hooker 21021HKR ROL 1964-1966 Pontiac Grand Prix 389Overview For 4" sidetube sound control, Hooker builds long lasting slip in mufflers. These mufflers are easily removed for racing purposes and are available in a performance style glasspack or our quieter all metal reverse flow style for small and big block applications. Hooker mufflers produce a high level of sound control without restricting engine efficiency. Sold in pairs. Features Fits 4" Side Tube systems Performance Style Glass Pack Design Long