576 Head Porting

Though I PM'd A/MP the answer, since he PM'd me on this awhile back.)

I have found the templates and they list the following heads they were designed for;

"These templates can be used on the 360 swirl port heads,

P459269
P5249767
P5249574

OR the "308" & "576" castings.

Based on the stock 3/8" valve stems and the 1.88 / 1.60 valve sizes.

Being there based on the 1.88 valve size, this may be an issue for a 2.02 valve in the head. IDK, I'm not a head porter. Contact one if need be.