( There are a lot of very good aero tips in that article - it is several pages .)
I'm a little old nobody,
but if I was in charge of a major forum dedicated to testing out aerodynamic mods on cars, I would invite this guy over to this forum to share some more of his tips for us.
He runs the A2 windtunnel, which is actually affordably priced, and it might even get him some business if he dropped in sometime and gave us some insight.
I would love to see him join us.