Jack, I understand Baja racers use as many as three under frame fan driven coolers which are readily available in several sizes if you can find a place under the car. Such coolers can be used for trans fluid or engine coolant. The problem is that the drive shaft and mufflers don't give much room but maybe behind the rear pumpkin under the rear apron there is room for a remote cooler using long hoses. The fan makes up for the lack of a direct air stream. Of course some sort of screen would have to protect the cooler fins. I already have a few rock dings on my oblique under-fender set up.
For 36 Sedan: now that my car is back in my garage and the set up forced on it does seem to work I just have to forget the whole affair except not to go back to that shop again. The problem with the Sherriff is that the mechanic doing the work is a part time Deputy Sherriff!
Don Shillady
Retired Scientist/teen rodder