As for the head. the intakes will take some doing to get them to move. The exhaust all move with some light taping. And of course rust. From what I can tell the deck may have ben milled or maybe not. Along with pics of the valves I have attached a photo of the casting number which looks to me to have had some milling.
Let me know your thoughts.
Rock49 aka C-Rodg work in progress 1956 Chevy 3100 261 engine