For my wheels, tires, and associated spindles, I used the products below. Prices are always fluctuating, but I found it easiest to order theses and have them delivered. For the spindles and hubs, I purchased 5 so that I could use the 5th one for my steering assembly.
https://www.reesehitches.com/products/A ... KgQAvD_BwE
https://www.golfcartking.com/10x7-black ... ons-combo/