When I was fighting the water overheating with the turbo’d 2H I ordered a custom radiator from PWR(I think) and it was a very nicely built radiator, and it did the job. Used to have the water temps outrun the EGT’s. After the new rad the EGT outran the water temps. Good cooling with the 12HT, that I’m running nowDefinitely post your results... I am looking into better cooling rads, but none other than PWR post any actual better cooling results (up to 30%) but they are more than double the price of an aftermarket 4 core aluminum