[justpassntime]

I know this is a lot of work but here it goes anyway.

You could change the top of the van. Chop the top and tapper it towards the back. It could even be so drastic that you would need to raise the roof to get your car in. Kinda like a super size pop up tent trailer. It could even be done with hydraulics like a car carriers upper level. I know it's crazy but I always seem to have extreme ideas. It would be cool no doubt, all the other racers would want one. You could even post your mpg on the side of it. LOL

Put a deflector at the front to help guide the airflow over the blunt nosed front.

Have we talked about Airtabs?