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4L V8 1981 - 1985 GMC G3500 Rally Custom 350/5
88/8 V 1989 Chevrolet R2500 Suburban 4
Has a set screw in the base plate for wide open throttle stop adjustment
9L V8 1969 - 1973 Dodge Dart Custom 340/5
Works with all Holley passenger side R4 LS brackets
Universal 2-3/4 Varitune Adjustable Muffler Double Offset (439 Stainless)-31025 transmission-mounts 4L V8 1981 - 1985These 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 manufactured with 439 stainless steel, in 2. 5, 2. 75 and 3. 0 and with various offsets to fit most aftermarket and OEM applications. These are 2.
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