'65 big block heads

[big gear head]

https://westky.craigslist.org/pts/d/big-block-chevy-heads/6381451104.html
I don't know how hard it is to find '65 heads, but I thought someone might be interested in these. The add doesn't give casting numbers.

[olredalert]

----Seller doesn't know that there were two distinctly different big block heads in 65?.......Bill S