Workmaster, Yes, the end plan was to enable me to convert the box from dually to single by simply removing the extension and changing running boards. Hopefully the change would take an hour or so. I'd like to show the idea at the summer show&shines by having one side a dually and the other side single. I will grab some photos and share with you later tonight or tomorrow. They are C- shaped like you describe. I used the fenders to outline the mounting surfaces on a plate sheet. I traced it out, then cut out the two thin LARGE C-shaped mounting surfaces. Then I drilled the holes in the C's that would line up with the fenders/bed side. I used threaded rod and nuts to space out the two mounting surfaces. This allows you to set the gap nicely and helps square up the holes before you weld them. Set your gap, cut your sheet to cover the two mounting surfaces and slowly tack weld it all together. I also thought about cross bracing but was surprised at how stiff the extension was when I was done. For now I may just add a steel rod brace from the back of the extender to the box side like the original fender had. I'm sure this is hard to follow. The pictures will make a world of sense I hope.
Last edited by Fox; 12/02/201512:35 AM.
1970 Chevrolet C10 Grandpa's -- My first truck -- In progress to shiny Follow the build in the Project Journal 1950 Chevrolet 1-Ton Dually "Ole Red Girl" In the Stovebolt Gallery More pictures here 1951 GMC 9430 1 ton dually--Shiny! | 1972 Chevrolet C20- Rusty- the puzzle box lid for the C10 | 1962 AMC Rambler American- my wife's Parts trucks- 1951 GMC 9300 | 1951-GMC 9430 | 1951- Chevrolet 1300
