Sablesurfer,
I bought 6 rims and tires for my 64 C-30 Stake at a junk yard here in Las Vegas. They were on a wreck 84 or 85 1 ton chevy dually pickup. They worked just fine.Had to pay $350 for the 6 of them but the tires have at least 80% tread.
You will not believe the difference in handling and ride after you make the change to radial tires.