Quote:
Originally Posted by TerrysSPF
The SPF headers are 1 3/4". You can get larger headers, but keep in mind that too large a header tube can cost you TQ. I probably wouldn't go over 2" headers if I were buying new.
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Agree. It's not so much the header pipe size as it's the header-to-cylinder head-flange that needs to be cleaned up. If I had the skills I would do just that and have them re-coated.