Some insight on my build

Mysons68dart said

I already have the heads should i gasket match and clean em up or otb ? And what about a 373s gear.

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The gears are fine. I'd double check the guide and make sure they ain't tighter than a (insert here anything you like) or loose as sock on a rooster. Also have someone look at the valve job and make sure it's up to snuff. Then run them.