V2win, I can't PM you directly so here goes. Thanks for the reply. I called the second number on Saturday, talked to the guy, asked him about the numbers on the block, said he'd get back to me, haven't heard a word yet.
What I'm looking for is a block stamped CH426 on the distributor pad with a build date before about 1-10-67. All I've found so far is used up, worn out, race junk. So the search continues. Thanks so much for the reply, I appreciate it. If you happen to run onto something, please keep me in mind.