470 low deck

In order to use only pushrod oiling, you have to use rockers designed to be run that way.
Many are not.
If you use rockers that can be run with PR oiling, I would keep the stock oiling in place, but I would restrict it quite a bit.

That being said, depending on what the rest of the combo is....... the PR oiling may not be necessary at all(in which case I don’t restrict the stock oiling).

As for the Jesel deal like on Greg’s motor.
There really is only two choices for oiling on those....... spray bar or PR.
(It’s pretty hard to oil through paired solid shafts)
I have customers doing it either way, but none doing both.