Nope, not sure what compression it really has, that was just a generic guess, figuring stock compression is likely around there.

I haven't cleaned the tops of the pistons off yet, but here are a couple pictures, maybe you can tell me?

Picture 1
Picture 2

Also I haven't checked the crank yet. I'm in the process of wiring my new 30x40 shop and only have 120v outlets. I'm putting in a couple 220's this weekend so I can get my air compressor going and remove the flywheel and crank pully. Assuming its the stock motor, it's a 390 according to the vin.

thanks,
Jordan