Anybody every play with or run a 576 head

Nope, my mistake, they are 974's hogged out. Not much of a short side radius on these exhaust ports....PO gutted the floor! Pretty rough port match too. I didnt touch these, just got these 2.02's for a song.

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There’s proof that everyone should not touch porting burrs. I think we have all done some type of porting work we shouldn’t have but he hit every base on that job.