Thinking of Putting LA style heads on a Magnum Block. (Airwolf 220s)

I know the Magnum Block can be drilled for Shaft oiling.

BUT would push-rod oiling be better or just as good?

Who makes new shaft rocker set-up for LA heads? Preferably in 1.7:1 ratio.

Do the rockers need anything special for PushRod oiling???