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Old 07-25-2013, 11:46 AM
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6T5 Cat 6T5 Cat is offline
Chief Ponti-yacker
 
Join Date: May 2005
Location: Bear, Delaware
Posts: 560
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I've bought 4 Performer RPM manifolds for 4 different Pontiac engines I built over the last 10 years and I had to have each one of the manifolds cut .060 in order for them to fit properly.

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