Hello Hanno,
Great to hear from you!
I am more than open to ideas and suggestions-always from anyone... As for the BKT AW-702 tire, I just looked at the size chart for a 10.50-16 and it comes to 38-3/8" tall which is too tall for the early WA Chevs. unfortunately....
The tire that that have in mind is roughly a 36" x10" to mirror the original sand tires in size...