Tires are variable. Could be good for 6400lbs total or 8000lbs. Not an absolute factor, especially on an old truck. They can be whatever you want to put on it.
Rims? Again easy upgrade, sometimes a cheap upgrade too.
9900 gvw? ROFL…you haven’t learned anything on this forum or you just don’t believe it….
I’ll leave it at that. Other than to say the only reason 3/4 tons used to and some still continue to be <10k gvw is for DOT purposes. That “2500” Dodge is the exact same chassis as a dually.
Haven’t seen you chiming in much in recent years, but apparently you can’t pass up the opportunity to spew some weight cop BS like the old days?