In my thinking Kamm-back is to boattail as bullet is to teardrop. Let's leave parsing Kammback from partial boattail for another time.
Questions to aerohead:
- No. I can't explain.
- Yes. aerohead saw that with his backlight in the wind tunnel.
- Yes, potentially. If it is done right.
- The front air dam and side skirts would have to reach the ground for this to be a yes.
Given the ride height of your vehicle, you might want to go with a smooth bellypan and spatted and skirted wheels. The air moving underneath would like the rear difusser better. Have a look at this design concept from Coventry University:
Even though they hold the sides in, starting as the body reaches it's max camber to leave the tail-lights exposed; look at how much the extended the top onto the existing roofline when they had the opportunity. No high mounted 3rd brakelight, apparently. They box in the bottom but there is a step rather than a difusser.