After I closed off the bottom of the car. The rear end was roughly 5-6 degrees of angle. I spoke with my aero engineer, he suggested 6 is optimum. Range from (4-6) I overlayed a stock image of the saturn in sideview and it is roughly 6*. From there I used my under belly pan as a guide; as it was in the propper range.
-Alex
I did not take any photos, cause it was pretty quick to build. The same method was used, which a member used to make one for his Mini Cooper S I believe.