Aero for a '55 Chevy

[65 drop top]

I'm building a '55 Chevy 210 2 door post car. It's sitting on an Art Morrison chassis. I'm keeping the body pretty much stock. That means no trunk spoiler. I'm pretty open to anything on the bottom side of the car, basically bumpers down. Any ideas to help with aero and still look nice and clean? I'm not building a race car, but would like to be able to open it up on road trips and not feel like the old shoebox is going to fly away.

[Yukon Cornelius]

Belly pan, and splitter below front bumper.