Here are pictures of the finished diffuser. The angle is 10.5 degrees. That is about as shallow as I could go with the layout of the car. That is actually pretty good, though. At first it looked like 14 degrees was the lowest angle I could achieve.
The outer air skirts are just on the inside edge of the tires. I plan on making rear wheel spats that attach to the skirts eventually.
This whole diffuser is relatively light. I have not weighed it, but for how big it is, it sure feels light in the hand.
Next is the under pan. The car has a nice nose pan and various pan inserts under the car to somewhat smooth the airflow. But, it is still far rougher than I would like.
Matt
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