Any one interested in the oiling mods I did?

Duane said
Those bearings are also feeding two rod bearings each and some cam bearings, not just the main itself. If you are using full groove mains, you are increasing the volume of oil that feeds the rod bearings as well.

The sketch doesnt show the lifters or cam bearings as they are of no consequence to the issue of flow difference across branches.

Most high end SBM engines I see use a dry sump or belt driven external pump.