Finding old hardware in quantity and at a reasonable price is going to be a difficult task.
You could post at joe yates board many life long collectors read that board. There are 2 individuals that have old glass eyes in bulk, but at $3.00a pair, rather expensive.
There is a company in Springfield, MO. - Little Sac Bait Co. The make old style lures in addition to the new Winchester baits. They have the machines to stamp the old style props with tyhe long bearings. They might sell you some. This is just a guess though.
There are some Japanese companies that sell some old style hardware, but again, expensive!
In any event. Good luck