Experienced cylinder head speed shops?

Location would help a lot. Otherwise;

I would certainly contact & talk with @replicaracer43 who can easily handle your needs for your goals. He has been a long time member here that does really excellent work and has been doing this for a long time here not only on this and other web sites but for a living in the performance and racing engine world for many years now.

Oh, you don’t want to “Polish” your heads unless it’s the outside of the head for a show car.