Are these headers new or used? Do they have and individual port flange or one piece? If they are used individual flange headers, chances are they have warped from the heat. I had this happen on my old MAC headers before.
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NewEngland Auto www.baystategearheads.com
-91 Mustang Coupe, ex 4cyl (sold)
-99 F150, 3" lift, 35" Procomps, Magnaflow exhaust
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