Race Hemi Piston Rings?

You need a dykes ring. Total Seal still has them last I checked.

The dykes ring fell out of favor with thin, back cut rings, gas ports and vacuum pumps.

They will still work.

I be happy to tell Total Seal helped me. Very good service, and after some measuring I get what I need. Have to cut the oil groove some though, since this oil ring is no longer available. 5 Stars for Total Seal.
Thanks for this very useful advise.