Gatorac Jim, are there any names on the bearing race or rooler race? If not they are made in China. GM used the same cheap bearing in their trucks and they look just like yours in the 1/2 and 3/4 ton light duty trucks. You need to get Green or Timpken bearings for starters. China doesn't know how to harden surfaces yet without failures like this.
If you are going to road race the car you need to look at installing a rear end cooler and pump. I am not a big fan of the inner seals in the rearend because the axle bearings need lube too.
Your gear set may be OK but I wouldnot use them again. The hardness takes a beating when the carrier starts to wobble around in the pumpkin.
Hi temp rearend
oil should also be added. Your trans may be facing the same issues of being overheated when racing. You might want to look at Morris photos for ideas if you keep racing, rearend and trans. Niether system is hard to install, just use relays on the pumps. Rick L. Ps doing this to my car too.
