You might look to the OE's. There are numerous vehicles out there today with as much or more horsepower that are able to pass government noise standards. You may have to get creative with mufflers and resonators like they do. I've heard several people recommend late model Cadillac mufflers.
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If it breaks. I didn't want it in the first place.
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69 GTO \ 72 FIREBIRD \ 1/2 OF A 64 GTO \ 70 JAVELIN \ 52 FORD PU \ 51 GMC PU \ 29 FORD PU \ 85 ALFA ROMEO SPYDER \ A HANDFUL OF ODD DUCATI'S \ 88 S10 LT1 BLAZER & MY DAILY DRIVER 67 SUBURBAN.
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