Damn, this is getting expensive, especially for a prototype. Now I need a 5'x1' sheet of plexi, just so that I can cut half of it off in a non-standard shape.
Oh well...
Hey, is there any particular reason why the block would be more preferable at the rear of the spoiler tunnel than at the front? What if it was blocked in the front with some sort of curvy "ramp" to further entice the air over and around the spoiler?