I've got a 2000 4Runner with a manual hub conversion using parts from a 1st gen Tacoma. Previous owner had no cone washers or nuts holding the hubs on. I see plenty of companies that carry the studs and hardware for the Aisin hubs, but they all say they're for 86-95 Toyota trucks or Landcruisers. Customer support for the ones below could only confirm they were for Landcruiser. I'm assuming they're all the same, but wanted to check with the masses first.
Front Axle AISIN Hub/Drive Flange Stud Kit - Fits 1958-1/1998 40/55/6062/80 Front & Full-Float Rear Axles
Front Axle AISIN Hub/Drive Flange Stud Kit - Fits 1958-1/1998 40/55/6062/80 Front & Full-Float Rear Axles