So some updates. The front underfloor on the Corolla LE looked like this:
Two things, I removed the center tow hook which can just be seen and I purchased the front underfloor off of the LE Eco, which simply bolts over what you see here.
This is what the LE Eco front underfloor. For $29 I couldn't resist. However, the other LE Eco underfloor panels are much more expensive and I don't think I'll be purchasing them:
The area ahead of the front wheel spats is a ugly concavity:
So I've created a panel to cover it:
Frankly I don't expect any noticable gains from these panels to be honest. But maybe they'll surprise me. I'll give them a squirt of paint and fill any gaps with Drip-Chek. Also noticed a gap along the flange for the spats that I'll fill as well.
I also created a panel aft of the rear wheel to close up the gap between the parachute rear fender and the exhaust. I did it more to create a mounting panel for an eventual pontoon fender to clean up the aero aft of the rear wheels. For some reason I don't have a photo of that but I'll grab one later.