Welcome to my world! lol.... those arent the ones, the ones I had were all chrome with the embossed M/T in the center. You're dead on with the 3.33 though!
Sadly, yours are probably out of production. The caps, not the wheels. Ever made a call to Mickey Thompson themselves to see if they've got any old stock on hand? Never know if you don't ask.
Have you considered any of the universal ones? Or the other brand ones? What style do your wheels take? Slide in from the back or snap in from the front?
There's a ton in the 3.33" range...get us a caliper measurement! lol.