I forgot to go back and take better pictures of just the wheels, but here is the best I have.
[img]http://thumb9.webshots.com/t/30/31/6/65/34/2325665340080251109eJajmQ_th.jpg[/img]

I am 100% sure they are adaptors on both the front and the rear.

Perhaps they were made by Motor Wheels? I think someone said that name, but not sure.

•1951 GMC 250 in the Project Journals
•1948 Chevrolet 6400 - Detroit Diesel 4-53T - Roadranger 10 speed overdrive - 4 wheel disc brakes
•1952 Chevrolet 3800 pickup
---All pictures---
"First, get a clear notion of what you desire to accomplish, and then in all probability you will succeed in doing it..." -Henry Maudslay-