There were different levels of "1/2 ton" "3/4 ton" and *1 ton". My current 1985, 1/2 ton, has a 4800 gvw, I've had 1/2 tonners that were rated around 6000 gvw.
All dodges, never had anything but.
My newest is a 1/2 ton, a 12 1500 and it says 6600 on the door sticker, max Still a 1/2 ton.
I've had a couple of 3/4 ton trucks. My 78 was a 9000 gvw /my 83 was 7500.
I remember having an 83 factory service manual, my 83 250 was the middle of the 3 possible "250's" they sold that year, the lightest was below 7000 gvw, still 8 with semi floating axles, basically a 1/2 ton rear end with 8 lug flanges.these still had 9&1/4 rear ends with C clips. Not the dana 60 or 70 the heavier 3/4 ton trucks had.
They all had different rear spring packages as well.
Mine had the full floating axles, as did the heaviest version which that year was something like 8500 gvw. So it's entirely possible to have different sized lugs on different 200s/250s.
My 78 d300 which was a dually, had a 10000 gvw.
Most current 3/4 ton trucks I see are 10000 now.
At work I'm stuck working on Ford's, my son's newest truck is a 17 2500 and it's a 10000 lb gvw.
That's why some "1/2 ton" trucks can carry more weight than some "3/4 ton" trucks.
Many of not most that drive pickups don't realize that.