W2's since around the late '90s have been set up for pushrod oiling, or at least that was design intent. If I understand correctly circle track racers requested that change to be made for a long time prior.

I'm sure somebody has a set from the interim time period that are not set up that way and would debate that....I've heard of them before. As with all things Mopar: never say never...

That design does force the builder into more expensive rocker arms like TD and so on, but that style of rocker usually cures enough other potential issues it's worth the change.