1963 K50 10 hole rims

[63KC50NAPCO4X4]

Hello, need any info on 63 k50 10 hole rims. 20in split rims on now want to
change rims to run tubless at least 44s and 10-14 wide. I have been told
just asking around that they sell aftermarket rims?also told I can use wheel
adaptors? also told to use milatary rims and tires, also told to use new style
steel rim and weld plate to them and cut center hole and my 10 hole pattern
out. does anyone know the proper method for this project? I am shorting my
K50 napco down for lwb or swb project not sure which bed I will use yet, I
am moving rear forward and will mount both beds and take a look to see what
I want to use, so far most I have told about on this site has told me to go lwb. also doe anyone have a contact # for the owner of the big geen 50 out of canada that has the military tires and not sure about the rims. but that is
what Im looking for, for my end results but without the flat bed and I may add the tilt bed since I do have pto. sorry I wrote a book but I know Im not the only one that has had this question I spend hours searching the past
post I may have missed it. any info will be helpfull for this project. thanks