Small Block Heads

I can't see in the picture...are those two heads date coded close? Also, it's funny they say 360 on them.

If they weren't such crazy money I'd love to work with a pair.
For what it’s worth, I’ve had several sets of O and U heads over the years. Every one of them had 2.02 intakes, and had the AAWJ 360 on them. They all performed comparably with the X heads. They definitely were a step up on the 1.88 J heads.