Yes, the adapters came with the truck. I had never seen any like them before. I suspect they were solely for a little extra "footprint" and weren't designed for high speed. I won't be driving this truck with the adapters on at high speed. One day I might swap out the rear end for a 14 bolt.
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
