09-28-2012, 05:19 PM
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Senior Club Cobra Member
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Join Date: Sep 2000
Location: Holderness, NH, US of A,
NH
Cobra Make, Engine: CSX 4772 old iron FE
Posts: 5,499
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Not Ranked
Hi Mike, I'd recommend 3/4" min to about 1". Make sure the timing is set, I've seen them scorch a good paint job from slipped timing. Yes his is an under car FIA exhaust, how's it coming together Mike?
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