Slant 225 motor codes from VIN and trans mating questions

I'm keeping the A727, working like new and almost nothing in the pan but a little black silt after the first change when I bought it.
I found a motor 152 miles away in a 1982 D250 van. The guy is checking to see if its a 2bbl and is going to send pics. It's grade A, not that I put any stock in that rating, and they want $450. If all goes well, I'm going to drive to Farmington and take a look. Kind of a pleasant drive anyway.

Thx for all the replies!