You can DIY an oil cooler for much less cost and use great parts, one way to save is not using SS braided lines, not needed, use good push on rubber lines and shop for good aluminum fittings, saves weight, cost and not wearing out parts the SS lines will do that they rub on, it takes about the same amount of time to install except making mounts which is not that tough. If you do not care about a bit more weight you can use brass fittings and even cheaper hose just fine. I have around $375 into a Setrab dual pass cooler, Mocal plate, lines and fittings but the Mishi is a nice bolt on setup for those that prefer a one box system.
You can save on a radiator, I spent under $250 but it was A LOT OF WORK.
Open up the grill and that really f'ed up crash sensor bar in front of the coolers....really shitty design.
Seal up the coolers so air into the grills has to go through and not around them.
Open up the bottom of the radiator support behind the IC, easy to do, allows more air out of the back of the IC.
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Already covered, do not run thicker oil, that is a should of been dead a long time ago old school bandaid.
You can install a bigger oil filter, 1355 Wix made sold by NAPA, damn good filter, about double the capacity for better flow, a bit more cooling, a bit more oil, a lot more filtering.
Unfortunately I had to go back to the stock size filter due to the cold side charge pipe I installed, great unit, just wish designed a bit differently so I could of kept the big filter.
Drain off half of more of the coolant, add water wetter and fill up with distilled water or look into the Mishimoto coolant.
There are many ways to deal with this, sometimes we need to do most of them, sometimes just one or two but it all adds up
