engine ID tag...where?

[PKRWUD]

There is a casting number, and a date code, cast into the righthand side of the block, just above the starter. Between those two, identifying your engine should be a breeze. The casting number will look something like this:

C9OE-6015-B

And the date code will look something like this:

9F17 (with what looks like the head of a flathead screw at either end of the code)

Post them, and I'll explain them to you.

Take care,
~Chris