Admittedly, this was toward the end of the overheating battle. The old flatfender Jeeps had vents cut in the inner wheelwells to assist with cooling, and everyone we talked to with a big engine in an FSJ cut holes in the hood in one fashion or another. We couldn't bring ourselves to cut the hood up, so the fenders got fish gills. The point is, if you've got a huge swapped-in engine or a high-output engine, sometimes the air the fan pulls through the radiator needs an outlet. If you still have the stock engine, it shouldn't have a problem, so look elsewhere.