The Stovebolt Site Forums The Shop Area Driveline Where to find bias ply tires

We're trying to keep our Chevy 3600 original and like the look of the bias ply tires on the factory two piece wheels.

The last owner used trailer tires. Where can we find tires to replace the old cracking tires? It seems like the rear tires are traction style and front are "highway" type.