I spray my cars with
automotive paint. Tamiya says to use the color 'US NAVY insignia white', which
I remember from my aircraft modeling era is FS 17875. So I went with my Federal
Standard color guide to my local automotive paint store and they made the
paint for me.
You can choose to build the car from the assembly guide, but I chose to first
build the body complete and airbrush te whole thing.
When you spray with automotive paint, be sure to use a good primer and
ALWAYS use a good safety mask. If you don't, you can't remember you did
modeling at all in a few years.
For the front bumper I used the Tamiya spraypaint TS-54 as stated in the guide.
Painting went well. I have to remove some small dust particles and give it all a last wet coat of paint.
The
roll cage is mounted completely in the interior tub for a proper aligning.
Just glue all parts together and place the cage in the tub, taking care
not gluing the cage to the tub. You will notice that small holes in the
tub will show you the place for the cage. After letting it dry overnight
I airbrushed the cage in Alclad steel, which gives a nice 'light gun metal'
appearance. The doors are covered with Kevlar decal from Scale
Motor Sports. 
The wheels are painted in Alclad Chrome, but you can also use Testors chrome as you whish of course. I like Alclad because of the very fine metal particles.
To get the best chrome finish with Alclad you have to paint the object gloss black first with an enamel paint. After letting it dry overnight you can spray a thin coat of Alclad.
I skipped the black paint on my wheels to prevent a to much chrome shining.
