I have a 28 Chevrolet 1-ton I am redoing. It has a factory Chevrolet cab so not built by Hercules but I have done so much studying over the years of both that I may be able to help some.
The mechanicals are all the same as Chevrolet built the chassis with a firewall and Hercules just put the wood body on.
Post some more pictures or PM me them and will see what I can do.
