Take the galley plug out on the passenger side front of the engine - the one behind the cam sprocket and see how big that galley is that runs from front to back. Then determine how thick the wall will be on those bushings. What's left is what supplies the mains. I have never seen or heard of an engine failure due to bushing the #2 lifter bores but if someone were to use a very thick wall bushing it may be possible. Each bushing on the passenger side theoretically reduces flow to the next main journal down the line.

On a street engine you will be fine.
If you are worried about it run a line from passenger side front galley to driver side rear galley. That's good for 9000 rpm drag motors.

Mr. Shepard made other mistakes in putting the bible together - and collecting info from the engineers.