I have a 57 GMC one ton dually with the 18" three piece rims and in the same situation.
Mind if I tag along for an answer?

Oh, and welcome to the Garage, you have come to the right place for help.

Don

1967 GMC 9500 Fire Ladder Truck
"The Flag Pole"
In the Stovebolt Gallery
1946 2-Ton grain truck
1946 3/4-ton pickup,
1953 1-ton pickup
1957 1-ton flatbed dually,
1954 Pontiac Straight Eight
Of all the things I've lost in my life, I miss my mind the most!