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GMMG will be extremely loud and raspy with headers and no cats. If you're talking about a true dual exhaust that goes over the axle, that won't be easy to do with a 3" setup. A dual 3" exhaust with bullet mufflers and turndowns is still too loud for the street as well. I would suggest a Mufflex 3.5" cat-back if you don't want to lose any power.
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69 Z28 JL8, #'s match - being restored |
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