On the bit about the fenders, here's a different sketch of what I'm trying to go for. It's drawn over a basic stock VW chassis, although I don't think the seats are quite right. Should be ROUGHLY 1/10th scale. I think it's under 17Ft long, and so long as it's shorter than a Ford Excursion, I think I'll be okay.
As for the drawing, I need to find somebody who could do a fluid dynamics thing with it.
Botsapper - Nice P$hop work. Only concern with a type 2 (That's a bus I'm guessing) is that I think some of those parts are hard to find and rather expensive. A bug may have a few of those, but most should be easy enough to find.
123 - Yeah. Air cooled would require the fresh air source, which'll make things slightly difficult, but I'll work around it as best as I can for now. Isn't there some way to swap a pulley so it makes the fan spin faster with the freeway flier? Although if I do a diesel swap to the flier, it'll be liquid cooled and I won't have to stress as much..