I found a really good free site which goes into great detail about locating and identifying all the casting numbers for SBC's and BBC's.
Here it is
http://www.mortec.com/location.htm
All I gotta do now is get a pair of eyes on the other end of a cell phone......Jer? Maybe you can give me your pals email so I can coordinate something with him, John isn't it?
Yours Truly Chris Wade