@ kach22i
Did you buy this PDF as your influence for your pickup wing project?
A Rear Spoiler of a New Type that Reduces the Aerodynamic Forces on a Mini-Van
I was going to buy the PDF until I read that they were not including the spoilers image in the doc as they are getting a patent on it. So my hopes of copying the shape for my own van project is a bust. Well unless I find it online.... So mean time I'm looking at possibly making a kammback instead.