Some more pics. The bottom diffuser needs some work but I can play with that. Somehow I ended up with a downward slope when I got the car off ramps. The bulge in the picture is from the exhaust can so not much I can do with that.
I will measure the rear of car to determine side inward slope. It looks like 6-8 degrees when looking from front of car. Looks like it expands out from back of car. Weird. Maybe I will try getting a picture from off the roof or something.