Grigg I added that tidbit for those with the six lug buds. As for the 275mm bolt circle with 221mm center hole hub piloted wheels I seen some talk here on the Bolt about using the newer hub piloted wheels with the 221mm center on the older trucks with the larger center hole or smaller hub. Before I go any farther Grigg I know that you are using the late model axles so this is for the guys looking to replace their 20" tube type wheels with the later 19.5" tubeless. These wheels will fit the bolt pattern however the hub hole is too big and should not be used like this, but you can change to bud style nuts and have a machine shop put the proper bevel in the wheel bolt holes. This will make them bud wheels and keep them centered. Hope this helps those who want to use the later model 19.5s this way you can even get aluminum wheels. I have been thinking about this for my 64, I hate the 20” tube types.