I was able to get a copy of the title faxed to me. The Vehicle ID Number is 9M5285731. Title shows that it is a 1944 1 1/2 ton. I found the flat surface that you referred to next to the distributor, but could not find any numbers stamped into it. I talked to the owner and he said that truck had a remanufactured engine in it. The GM Heritage Center sent an e mail back saying that they had a backlog of requests, and it may take some time for an answer. Thanks JP