AFAIK, the only pump that is claimed to be a "high volume" pump for our version of the 6G72 is made by Toga. The 3si folks say the "high-volume" claims aren't true..... but then it could be that the OE pump is already considered to be a high volume pump and perhaps what they mean is that the Toga pump is no better than the OE pump. I don't know what the Toga output for our version is - and don't know the output for our OE pumps, either. It's entirely possible that the Toga pump output exceeds the factory truck pump. Some folks cut new rotors (no thanks), shim the relief valve (no thanks) and/or port polish the pump (no thanks).

I agree with you that the factory rods have squirters for a reason - and I think we agree that the squirters mainly benefit the cylinder wall. Actually, since there are 2 holes in the journal, there's a squirt on the upstroke and one on the downstroke. I'd bet that with piston speed the oil stream that's squirted on the downstroke is intercepted by the piston skirt and ends up in the wrist pin/crown area.... but certainly on the upstroke, the squirt stream lands on the cylinder wall. Whether the downstroke is like a wasted spark ignition and has no value is questionable, but I certainly see the value in the squirt stream to the "hidden" thrust side of the bore on the upstroke.

Maybe before I use those rods I'll have a discussion with the engine builders at 3sx and see if they have experience with using the aftermarket rods and also closing off the block squirters.

These things are sorta mysterious - maybe voodoo - maybe not. It's even possible that they don't do much of anything needed, yet contribute to lifter tick. It wouldn't be the first time engineers have tried a solution in search of a problem that didn't work, but in the doing created a whole new set of problems. I'd sure like to talk with a Mitsu engineer about it.

Frank