Koyo n-flow. Its expensive. That part is for sure. But my temps are super stable and there has been nothing that i could do to it so far that would get them to go above like 84 degrees Celsius. So i think it does its job quite well. No regrets. Making the mounting brackets for it was kind of lame though. So maybe not the best for fitment.

FD with Koyo "N" flow. Best rad ever in my car. In a Houston summer of 95+F, if you do not stop and let it heat soak, it will stay below
85C. When the fans come on at 85C due to slow driving or heat soak, the temp will not go any higher no matter what I do including a
0 to 140mph sprint.