Anyone ever run Speedmaster Heads on their small blocks

Excellent, thanks for that info!
What happens with the Magnum hydraulic roller lifters and hollow pushrods? They will continue to pump up and push oil up the pushrods to the LA style rockers on top of the normal LA oil passage in the block oiling the rocker shaft. Is this bad, or does it not matter?
I'm following along here. I studied up quite a bit about using Magnum heads on a LA block but not the other way around.