51PhatBoy-
I have seen a 52 or 53 3/4 ton that has the tilt bench seat. From the looks of the rest of the truck, I believe that it was original. This truck was not restored. I think that they were available before the late 50s. It may have been standard after 51, because mine comes forward with no tilt. I thought they all did that and mine was welded at some point so it would not tilt. Thanks for the thread. It is just another question in a long list.
Mark
