I looked at the date sode area again today while it was on the lift getting a new exhaust system. The numbers in the "clock" are 3,5,7&1. I'm not sure what is supposed to be first but those are the 4 numbers. After closer inspection it definately looks like an "F" inside the "C". The upper horizontal line of the "f" is the top curve of the letter "C".

Also, Another thing I can't figure out & I've never seen them before. On the right hand side of the block there are what looks like 2 bolts sticking out of the block, partially threaded in, with a nut on each that is tightened against the block. Do you understand what I mean? They are just above the oil pan. The guy i got it from said it came out of a NJ state police car & it originally had an oil cooler that was hooked up there. Does this sound true or like a tall tale?

The numbers on the left head are EDC-E 6090

Thanks for all your help.

Billy