440 valve covers 10/69 built LA Cuda. 9/25 engine assembly date stamped on top boss. this is a great detail discussion. keep in mind this is when I first got the car 11 years ago. the engine had a spray bomb job on the when I got it the car. I am also showing the driver side if anyone cares as well. sorry for the mess under the hood, I was in the disassemble/document phase at this point in 2008.