The search is because of our rule set that states "maximum 8 inch width wheel with an 8 series DOT tire". "Must use stock axles, hubs, brakes". Most of the T-Bird steel wheels or steel snow wheels are 15 x 6 or 15 x 6.5 and not of the thickness or strength to put up with the banking, eventually rough/rutted dirt surface, and car to car contact.
Going with a reinforced racing wheel is probably a must. Diamond Wheels is the only source that I have been able to locate thus far and was hoping there was other options.