Universal 3 Inch Varitune Adjustable Muffler Double Offset (439 S/S)-31035 FrontLines Gasket Collector Gaskets Included No

Gasket Collector Gaskets Included No Emission Code 5 Engine Chevrolet Big Block Mark IV Gasket Line Ultra-Seal Material Ultra-seal Port Shape Round Port Size 1

8 L6 1975 - 1980 Chevrolet K20 400/6

13/8 V 1970 - 1974 Chevrolet Monte Carlo U/K/8 V 1970 - 1974 Chevrolet Monte Carlo 4

88/8 V 1976 - 1977 Pontiac Grand LeMans 4

Universal 3 Inch Varitune Adjustable Muffler Double Offset (439 S/S)-31035 FrontLines Gasket Collector Gaskets Included NoThese patented BBK Performance Varitune mufflers are the first of their kind in the aftermarket, fully adjustable performance Mufflers that can be adjusted for a louder or quieter sound and horsepower by simply moving the adjustment screw in or out from underneath the car with a wrench! These mufflers are available in 439 stainless steel, in 2. 5 in., 2. 75 in. and 3. 0 in. and with various offsets to fit most aftermarket and OEM applications. These