I’ve had 3 cams and lifters from John Mummert. All good, the last one a custom grind. No break in problems. I’d go to either him or Ted Eaton. Nothing wrong with Tim McMasters either, I just don’t have personal experience with him.
http://www.ford-y-block.com/valvetrain.htm. Mummert
https://www.eatonbalancing.com/. Eaton
http://yblockguy.com/. McMasters