‘Splash’ from the crank is not going to get up to the cam lobes on a slant six.
And if the thrust sides of the pistons are showing wear, your engine has issues beyond lubrication. The piston rings ride on the cylinder wall surfaces, thrust faces are intended to have clearance.
Another question, how are Doug Dutra’s ‘stand offs’ going to address any of the issues that you mentioned? All the stand offs do is keep a puddle of oil on top of the lifters. Doug’s other oiling mods like drilling over size the crank feed oil lines and porting the oil pump get a little more oil flow to the mains and rods. And little is the operative word here.
