Over the years and after all is said and done, I have learned this--Just call Smith Bros and two days later you will have beautiful push rods and you can sell the set you have that are not correct to lesson the blow and......you will never lose an engine becuase of a cup falling out etc etc Ask me how I know.
It is not worth it to use old, altered push rods.
Smith Bros is the very best--100% reliable Mopar vendor on the planet.