Most people recommend installing screw in
oil gallery plugs instead of the press in plugs for safety.
Also on some Mopar engines it seems common to drill a small hole in a plug behind the distributor gear in order to provide adequate oiling for the gears.
I've seen some people recommend this for the sbf too. Makes sense to me, especially when using a roller cam.
Are there any known drawbacks?
The one to drill would be on the left:
What screw in plug size fits the bores?
Simon