When looking for a radiator/shroud combination, I needed to be sure that my choice would handle any horsepower I had. If you are thinking over 450 HP, you don't need to take a chance.
I went with the Ron Davis radiator from
Levy Racing. These are custom designed for only Levy Racing to work in a FFR. They may be copied, but not duplicated in the quality and design. I felt the radiator was not an area to cut corners.
Maybe it is overkill, but I wanted the best.
(not my picture, but a Levy Racing-Ron Davis radiator)