DAN MAY - By the time 782's were built & sold, the concrete filled plastic 75# weights were what was being sold. BUT, the 26 pound cast iron FARMALL Cub frt wheel weights still fit and were also available, just not marketed very hard.
Since almost all garden tractors used the same rear wheels, the wheel weights from most other brands all fit just fine too. There's a few odd-balls out there, like the JD 400, and Case/Ingersoll and Economy tractors with the tall 16 inch tires, plus Craftsman made a 20 HP tractor with the same rear wheels as the JD 400. If it was me, I'd buy whatever you can for less than a Buck a pound.