Up in the Frozen North I have the F4 5+ and love it, but need to add Baker 'Air Wings' to really make it work. Keep cold out and to bring cool in. I would look real strong and the double bubble ... Did you ride in Harvey Slingshot when you were together?
The F4 5+ and the Nascar are very similar and block a lot of air so you will need a way to bring some in.
Didn't ride in Harvey's. Meant to just didn't get to it.