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If you were on the West Coast we'd be talking!

Here is a resource for engine codes:

and block casting codes:

With the 1. casting code, 2. casting date and 3. engine code you can determine exactly what engine you have. The VIN (less important unless matching to a car VIN) is located (I think) on the block next to the timing cover on the passenger side.

May as well ID the casting and date of the heads while you are at it as well:
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