electric fan on the factory 67 barracuda radiator?

If you want it good anywhere and that means traffic jams too, I would get a dual fan, with a shroud. You should run a relay with it, since it pull alot of amps or be sure to use 12 gauge wire and a high amp switch.

Its not cheap to do it right. Thats why for the money the factory fan works very good, but does drag down the motor.