Good machine shops are hard to find. Only 2 left in my area. I have been friends w mine for over 25 years. Mark Samford over in Clyde Texas is extremely meticulous. And since I wasnt in a hurry, I left my block and rotating assembly with him. Payed a little at a time, and he would work on it when time would allow. My little 318 build was small potatoes compared to the stuff he does every day, but he treated it as if it was a big buck build. Same care and craftsmanship. I have seen a lot of interesting stuff in his shop that people wont just trust anybody to. One thing I saw was a set of prototype Pontiac V8 heads. He has scaled back his business because 1 he cant find anybody younger willing to learn, and 2 he is in his 60s and starting to slow down. I asked him about younger guys wanting to learn. He told me, they only care about "tuning" and using a lap top. Could care less about how to machine it right prior to "tuning" it.