Aftermarket Iron Rocker arms !

Bushed ductile iron W2 rockers. .754 gross lift (.734 net) and 8500 RPM. Never had a rocker fail. Broke a bunch of junk *** Crane lifters that killed the rockers, but the rockers never failed.
WOW - That said it all !!!
I wonder if I wanted to use these should I just send them off and be bushed ?