What is a Viking 38? I have a 1958 1 Ton 38 with a stake / hoist bed, but there is no Viking designation. I also have the 8 R 19.5 tubeless rims. They fit mine fine with no rubbing... but they where an option for it, and I like em.

Nice find. If you determine they don't fit and are of no use to you... let me know.