Just to learn something:
I see that the Hughes kit get positive feedback, and I read in the article that it's not bushed.
When reading the comparison of the three non-aluminum rocker arms, I get the impression that bushings is used to restore a worn set, or reinforce rocker arms with a lot of spring pressure, i.e more than 400 pounds.
So I wonder if these impressions are correct:
A unbushed steel kit will work fine in a moderate street application for a long time (Moderate meaning less than 400 pounds of spring pressure)?
A worn aluminum or steel kit can be restored with bushings?
Aluminum kits on the street will usually work just fine, but steel is recommended due to no worries about fatigue?
A steel kit can be made to withstand more than 400 pounds of spring pressure if it's fitted with bushings?