Radiator
Hey 65 I used a Summit direct fit aluminum SUM-380460 with Pass side inlet and drivers side outlet, but I am using an electric pump. The core fits the opening perfect at 22" and they make other variations of inlet/outlet. A little pricey at $300, but if there is airflow through it, it cools that 12.5 360 just fine. The nice thing is I didn't have to weld anything to it to mount it.