I took the heads for this project to the machine shop yesterday to get a 3 angle valve job and milled and they said it would be over $500 or about double what I paid a year ago for a similar job on a customers heads and I had already hot tanked them and cleaned em up, I always used em because they were convenient their work was never great machine work anyhow so I brought em back home with me and am looking for a different machine shop.