1970 Chevelle Pro Touring Build

[Bob in St. Louis]

I don't think that gap is a good idea, there's a lot of loss there. No "OE" car has anywhere near that much.
That being said, I think the solution is as simple as a shroud that bridges the gap. Something as simple as a piece of sheet metal.
The main goal is to bring 100% of the air through the condenser, then the radiator, into the fans. You don't want "stray" air coming around the condenser.
Granted, it probably won't "hurt", you'll just lose airflow.
Looks to me like everything behind the "V" of the grill, up, and over everything would not only help direct air, but look cool too.
Don't forget about the bottom and sides. Same thing.