I've spent considerable time searching the site, but I'm still not 100% sure what I should be looking for. I have a '49 3600 and want to ditch the split rims and replace them with 16" wheels and 235/85 tires. I think I'm supposed to be looking for 16"x6" wheels. What other trucks came factory with the wheels that I need? Failing finding good used, what new wheels should I be looking for that will accept the factory hub caps (after I install the clips)?
Also, does anyone know where I can have my stock heater valve rebuilt?

49 Chevy 3600
65 Chevy K10
48 International KB-1 Service Truck
55 Willys CJ5 - Chevy 331 powered
26 Model T Roadster Rat Rod
70 Tucker Sno-Cat 442-A
96 Dodge 3500 Cummins dually flatbed x-cab 4x4
06 Jeep Wrangler LJ rock crawler
If you can't fix it with a hammer, it's an electrical problem