casting code

I have a sbc 350 I was looking at the stamp code on the passenger side front and it has the numbers 192000564 then K08 20FR. Can someone help me decode this. Its not the original engine that came in my car. Thanks.

Hi all, my engine is confirmed 350. The back side casting code says it's a 350 but the front passenger side head casting number can't be seen. I'll I see is the number "22." I know that crate engines don't usually have the casting code so I'm thinking its a crate? I was told when I first bought...