The absolute expert on the 1940 is Barry Weeks, perhaps you can e-mail him directly.
I have a 40 3/4 ton and have been looking for a bed for quite some time with no luck. So like the rest of the folks here, I'm hoping you find all the details.
On the subject of the 108" bed, I have an orgininal on a 1 ton 47 first (46 late?) if you ever decide to make those. I have mixed thoughts on the subject as it would be nice for folks but I kind of like having something unique.
