Thread: Which is the best flowmaster?
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Old 02-03-2003, 07:45 PM   #13
Simi Stang
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"I think you would be happy with them. Also, they get louder as they get broken in." That's funny.


Quote:
Originally posted by Coupe50h
I thought american thunder are 40 series?
They are the same. American Thunder = 40 series = 2-chambers
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