I rebuilt my 53 3100 with the kit from Chevy of the 40's. Had a local machine shop press on the races for $30. Worked great. Put John Deere corn head grease in it when your done.https://www.mcmaster.com/#9528k16/=19tlmux here is where to buy the balls if you want. They are 9/32" you need 60. They come in a pack of 100 for $6.01. I had them in a couple of days. Hope this helps.