I have a 52 1 ton dually with the original 18" wheels. I found a 69 Chevy 1 ton dually with 19.5 one piece tubeless wheels and they have the same center diameter and same size lug holes as the 52's 18" wheels and even have the same flat lugs with the slits on both trucks. These 19.5 wheels do not have clamping plates and should not have them because they are basically hub and lug centric, correct? Are these style 19.5 wheels difficult to find? I was planning on trying to find an extra 1 or 2 for spares but have not seen any more of these anywhere. Just thought I would ask a few questions since most of the knowledgeable 1 ton guys seem to be posting on this thread, thanks.