Are these heads ready to bolt on? Surfaced, valve seals, retainers...everything n such?
Or does my machine shop have to re-work them once they are bought?
Look at all the things we do to them! They are ready to truly bolt on. I even tape off the deck so no machining dust or particles can get into the spring area where there is some assembly lube.
You can check them out for sure, but they are meant to be bolted on and run.