I found the closest number to my block I have seen yet at the Indy swap, but it was just too "seasoned" to buy it, plus the guy wanted to much for it. Only 942 off, at least I have a firmer understanding of when my block may have been cast, of course you can never know that for sure. Congrats on getting your block, I have been looking since 1995 when I bought my 69 GTS convertible...
The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.
