Pat,
I agree with Howard. The covers you have look pretty close to the same height as the Powered By Ford ones that I have, but mine are cast and not stamped. I think these would go on AFRs with just rockers, but I am thinking that the rocker girdles will be asking a bit much. But, you never know till you try.
A single large seal like Jim described is OK, but don't even think about going down the path of multiple gaskets: it'll never seal right as they will slide off of each other and leak.
Lynn