Another Mopar Off My Bucket List - Barracuda Fastback

My 2 cents:
Option 1 is essentially option 2 with more work.
Option 3 could be a not so good idea after all. It depends on whether the fan shroud is tight around the fan. If it isn't, the air flowing through the radiator outside the fan will compete with the air being sucked through the fan when it passes through the exit hole of the shroud. It could lead to a poorer net flow through the radiator.

Could you post a pic?


It's dark outside now but I can draw you one for the time being. It's a crude rendition but it might give you an idea of how it's set up.
FAN.jpg
The fan is mounted directly to the radiator and fits tight against it. My hole for the fan in the shroud is tight around the fan assembly. The fan assembly has a shroud-like lip that extends from where it mounts to the radiator out to about the point it mates with the shroud I built.