I think I've seen an ad in Secrets for a guy who makes a conversion to put the '28 chevy head on a Ford block. Just shows it's a good one. I don't get that magazine anymore since I sold my old Ford, but they have interesting stuff on their web site:

http://www.secretsofspeed.com/
Also, they guy who does the magazine, Charlie Yapp, is always helpful; he might know where one of these old bangers is hiding.