Its all about economics and the condition of what you have. If you have pits where the cups ride, you will need new ones.
Yours are pricey, so it is worth opening them up to have a look see.

Last edited by 52Carl; 07/04/2017 3:11 AM.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission