Hi bob from Placerville (just passed thru there in my speedy last weekend)
Hit the knowledge button above, then scroll dn to #101. I think this might be what you're looking for. On the other hand, I don't know if a VS Mexi-crate motor even has numbers. My after market case doesn't have any. If it has numbers, they would be easy to see on the case just behind the alternator stand.
If you're down in the valley on Sat, here's where I'll be:
http://www.wilton-fire.org/2007Chili/ChiliCookOffFlyer07.pdf
Cheers!