72 Trans Am muffler clearance and drone
I like the sound of the flow master system. One change I made though was not install the h-pipe section as it didn’t line up with my headers.
https://www.holley.com/products/exha...er/parts/17104
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1979 Firebird Trans Am 301/4spd (Now 428)
1977 Firebird Formula 400/Auto
2007 Grand Prix GXP 5.3L
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