Thread: Ace 4-2-1 Header
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Old 01-13-2015, 04:58 PM   #18
OkieSnuffBox
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Quote:
Originally Posted by Calum View Post

Why is the overpipe required?
My guess is they designed their header/overpipe with max primary length, so their combo will meet up with the stock frontpipe, but not the standard overpipe.
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