Troy, John and Dan W., it looks like the spoiler design one is the same as in the 08 rulebook. Am I correct?
Hi Gary
In the old specs it didn't say the bottom spill plate had to be mounted directly under,vertical and in line with upper spill
plate the new specs do. We mounted ours to out side edge of body and angled it back and followed the side of body,all sides of spoiler were flat which rules specified. One inspector didn't like our interpitation but was over ruled because it really didn't say we couldn't. Now it does

Now that were going to have the car painted we'll put bigger spill plates on top [move the bottoms like they want]
and a means to install Gurney flaps.
I sent in a rule change request to allow mixing of both spoiler designs but was past deadline.
JL222

Look at spill plates on pg. 23 of this build diary.