Probably not what you want......

but just in case, I have one of those old 1968 ally blocks in my garage.Been blown up and welded back before I got it. Had my engine man look and he says it will cost a bit to fix it up properly. This is a proper 351C block, 4 bolts caps included. One of the guys on the forum has pics of a complete one he owns. I am sure you know what I am talking about. Let me know if you're interested.
Cheers, Martin