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this is a comparison between 2 sets of cheap ebay stainless steel mufflers. a straight thru design vs a single chambered style. which is quieter? and which sounds better? the test was performed on my 1967 pontiac firebird with a mild built 454, it is the test mule. yes it has a chevy motor, if i had a 455 pontiac it would be in it. the best welded stainless cheap cherry bomb walker flowmaster magna flow thrush summit amazon dynomax flowtech m80 exhaust pipe comparison decible 1968 1969 camaro street drag car any review also
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