Didn't mean to scare you... FWIW, I'm keeping my Johnson

I'll simply split the system (the increased flow is a good thing), and the only detriment is the high-pressure OEM setup. You can split the system and retain the high-flow pump, get cooler IATs, and relieve the pressure on the IC. Win-win-win.

Some folks in the warm climates (AKA Florida) can get away with running a distilled water/water-wetter mix in the segregated IC system, but if you experience freezing temps where you live, then I'd stick with the 50/50 mix of coolant/distilled water just to be on the safe side.

Once I obtain the new intercooler, I'll be doing the same thing.