I got pushrod oiling lifters from Crower years back and they were drilled wrong. The hole for the pushrod came out of the gallery area and flooded the top end. Crower wouldn't take them back or fix them which is one reason why I stopped using Crower parts.

I figured out much later how I could've fixed the lifters but water under the bridge. From what I've seen over the years the best way to provide oil to the pushrods is to pull oil from the clearance around the lifter. That way the clearance area acts as a restrictor and limits the oil to the top end.

Just a few weeks back I got a set of the new Sportsman roller lifters from Comp which are advertised as pushrod oiling. But when I opened the box I couldn't see any evidence of pushrod oiling. I talked to Comp and they agreed that their Mopar lifters do not oil the pushrod and that the catalog information was misleading.