You might want to give Patrick's a call. They carry a kit that has all the bearings and seals in it.
The cover does throw people off sometimes. While the cover has 10 bolts, the ring gear is 12. Summit does not carry parts for it, nor does Jegs. Also, disregard the limited slip units they list that fit "'62-'76" 12 bolts. They are only good for mid '65-'76. The '62 is the '55-'62 design (like what you have) and the '63- early '65 have a different spline count.


Bill Burmeister