I have a few in the basement. Bare, worn out, with valves, without valves. I'll take some pics tomorrow. Don't mean to sound rude, but who are you and where do you live?
I had 3 heads and the machine shop made 2 matches out the trio and they cant remember what they did with the 3rd head after the move. Sorry. For the record I think they flow in the the 344cfm range and the the cc's are 51. I am planning to build a motor with these some day.