I have the wheels that split in the middle. They don't have lock rings. I have a lead on a truck that is going to be scrapped that supposedly has the Dayton wheels on it. It also has a radiator, shroud, and parking brake parts that I need. I had a buddy help me change the tires on my truck, and I sure don't like messing with the split rims! Are the Dayton adapters easy to find, and expensive if you can find them?