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1968-1974 Pontiac Firebird 350 CID
2002-2003 Mazda B2300
The muffler is finished off with large 4
Max dyno gains of 9 hp and 10 lb-ft at the rear wheels
Models WITH Subframe Connectors Only
1965-1968 Chevrolet Impala Exhaust Flowmaster Stainless Steel FINE-LINES 1968-1974 Pontiac Firebird 350 CIDOverview: The American Thunder Crossmember Back exhaust system for 1965 1968 Chevrolet Impala and Caprice is perfect for the person looking for a moderate to aggressive sound level inside and outside of the car, with all of the performance benefits that you would expect from Flowmaster. This bolt on exhaust system features mandrel bent 2. 50 inch aluminized steel tubing with a built in H pipe crossover, a pair of Super 40 Series mufflers and dual 2.
