Magnum block mdded to oil LA heads?

Any body have a real easy way to set up an oil system for shaft type rockers? A -3 fitting from a main oil galley would provide plenty of oil. Tee this to fittings tapped into the heads in the valley? It would take a carefull drilling to hit the oil passage in the La head, hopefully it could be re ached easily without interferance. Anybody done this?