82 with Dana 44 and 12 Bolt?

[Patriot]

Hey fellas I just bought a 1982 Silverado standard cab 8ft bed and it has a Dana 44 front and 12 bolt rear. The rear is a full Posi. The truck has a 396 in also. The truck used to be an Automatic buy has the 4sp and 205 Transfer case.

I know the 44 and 12 bolt were not offered in 82, but is there a vin number on the frame to see if the whole chassis was changed out? Does the Dana 44 have a gear ratio stamped on it? The truck is from Montana so it is in great shape.

Anything else I should look for on the truck?

Thanks fellas.