Big, in my humble opinion you need to look at the hose fitting ID and the hose stem fitting ID. This is where you will have the pressure drop that will occur and could present the restriction to the oil flow to the engine. I know when we sized the hydraulic line requirements for any given component this, was always a consideration. The ID of the hose stem and fitting are always smaller than the dimensions that are listed for the fitting due to wall thickness requirements of the components.
This may not matter with hot/warm oil is it will flow easier but on cold start ups at -20F will there be enough oil flow through the fittings to the engine to prevent oil starvation? That is what I would be concerned about. If this was such a good Idea I think the Cummins engineers would have proposed this to Ram as a work around the filter issues on the 2013 3500HD trucks and 2014 2500HD trucks. This filter changing issues was pointed out to Ram by the Cummins integration team and Ram said the frame changes are required in order to meet the towing requirements so the bottom plate stays.
Jim W.