Thread: 3.55 or 3.73?
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Old 10-01-2002, 09:43 PM   #9
429mustang
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Location: westerville, OH USA
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Who make the 3.90's?

Go with either 3.73's or 3.90's
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1990 Notchback: BBK Ceramic Coated Full length headers, Dr. Gas 3"- 2 1/2" x-pipe, Flowmaster 40's/turndowns.
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