On my 1968 Firebird I have Flowmaster Delta Flow 50's. These are 3-chambered with a thicker long case to help minimize drone. Here is an older video before I had the car restored:
https://youtu.be/LB1y6jtuKlU
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Raffi R.
1968 Firebird: 350 .040 over, #11 Heads w/2.05/1.66 valves, Tomahawk TC-03 cam (214/221 flat tappet cam, 112 LSA, .0450/.0465 lift w/ 1.5 rockers), 200-4R w/3.55 gears, Street Demon 625 w/ Edelbrock Performer, H-Pipe dual exhaust w/Delta Flow 50's.
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