Scale Auto Models

I was looking for different vehicle models in movies, but all I seem to be able to find diecast are already assembled vehicles. The whole question is that I would build it myself.

Moreover, the models are molded ridiculuosly price. Here is a brief list of my most "wanted"

1966 Batmobile
Family Truckster film "Holiday"
Speed Racer's Mach V
Science Patrol jet program "Ultraman.

I have a few others, I would have too, but not vehichles.
I built when I was a child, some of horror monsters. The Mummy, Frankenstein, Dracula, etc. I remember some shining in the darkness, too.

Any help would be appreciated.

Try these: http://www.hobbylinc.com/prods/s_amt.htm
http://www.ertl.com/brand/amt/2007/index ...

Here the Mach V
http://www.hlj.com/product/POL00804

Some jets Ultraman
http://www.hlj.com/product/HSGUM1
http://www.hlj.com/product/HSGUM2
http://www.hlj.com/product/PLZPC-4