I just bought a 65 Plymouth Belvedere 1 project car that I'm going to try to save.
The car came with a title and the title starts out with 3157 then the sequence number.
The tag on the door jam matches everything but the 31 is missing. There is only 8 digits on the vin tag.
On the fender tag it says the body is a R1 which is a V8 Belvedere 1. But again the title is saying it's a 31 which is a 6cyl Belvedere I. And only thing the vin number on the door jam says is it's a 1965 and it was built in St. Louis.

Any ideas on why this would be?

Thanks