[IsaacCarlson]

I have been hashing this out for years. The front mounted radiator is most commonly used because it uses ram air cooling when moving. No fan required. It's the highest pressure zone on the vehicle, so it makes sense to put it there. The problem with that is the hot air has to go somewhere. It doesn't matter where it goes, it WILL heat the passenger compartment, either a little or a lot. This puts a higher load on a/c systems and reduces aerodynamics. Long tubes have internal drag, and long skinny tubes have a lot more. It's a ratio of length/diameter.

I started a mid engine project a while ago, and everything penciled out better with the radiator in the rear with inlet ducts behind the rear wheels and on top of the trunk lid. Not exactly what we are discussing here, but it very much applies.

The problem here is it's a front engine car, which makes it one of those things that might be better left alone or lightly modded, rather than trying to come up with something that doesn't really work. Front engine cars are not airflow friendly because all of the heat has to get out, and there is no good way to do that. The hot air usually goes out around the front wheels and under the car.

The best solution is probably an air dam to reduce pressure under the car, and large louvers to direct the heated air backwards out the bottom of the engine compartment. About as simple as it gets without redesigning the entire car. It works and doesn't take much engineering.

Even if you moved the radiator to the rear, you still have lots of engine heat to get rid of.