Back in the 1980s, I went to a local bearing shop and provided the original bearings and seals for front and rear wheels along with the differential. They took all and provided me with an exact match for all which has been installed ever since. Although I can't tell you the manufacturer of the bearings or seals, the price of each unit was 1/3 less then the prices being charged by Moss.
If I ever need a bearing and/or seals, my first move will be to find a local bearing shop and ask them to find a proper match. My confidence in their knowledge and experience relating to bearings is much higher then I have for Moss or most of the parts houses dealing with Healey parts.
My thoughts,
Ray(64BJ8P1)