[strictlypersonl]

The Fluidyne FHP35 is a good fit relative to the overall dimensions, but will require some changes:

The upper tube must be modified to clear the ERA chassis.
Somehow the fan mounting brackets must attached to the top of the radiator.

On the early cars, the bottom ERA radiator tray must be modified to accept the Fluidyne's lower pins.
I suspect that our later top filler/mount will work with the Fluidyne.
Some shroud mods may be required.

There's probably something that I've forgotten...