Looking at the pic of the header flanges, BrandX, I think I would slot the firewall end of the flanges (like the center holes) and let the header flanges "move" a bit to cover for heat expansion. Just a thought.
Tom Vaught
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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