I have a set of Ford buckets,91/2" dia, one of them has a two piece mounting cup on the bottom that looks like it would be used for adjusting the light. Can anyone identify these, I'd like to find a matching set for the other light.
The lower piece of that setup looks like a ball bearing race from an old GM wheel bearing, the upper looks like a modified plumbing pipe cap. I don't think these are any kind of factory part since a standard factory cup as in 28-34 Pickup & 28-32 car headlamp bars or 33-35/35-37 etc. car/pickup headlamp stand or 40-41 3/4-1 ton headlamp stand would be easier to find and modify for your purposes. The cups that come with many aftermarket "hotrod"/tractor headlamps will likely work as well.