Customizing - 1 In order to make valve stems and fuel line or brake line, a good item to use is Bus wire that you can buy at your Local Radio Shack. To do the tire valves drill holes small enough just big enough for the wire to pass through. now you can paint the wire the desired color that you want then let dry. Once this has been done pull the wire through from the front of the wheel. As it is being pulled through the paint will scrape off and form a small lump at the wheel base and the wire. This will hopefully look like the base of a tire valve. 

2.For those of you who don't really like the chrome look and don't really want to de chrome how about doing a wash. As someone has mentioned to me "I have always done washes on my military kits why not my cars". Try some water based paint by the name of "Oily Black, Polys Paint (TM)"and dilute the heck out of it. Just load the brush up and soak the area, then dry your brush so that you can go back over the same area to soak up the excess that was left behind while evening up your strokes. 3.Plug wires if you don't like drilling all of the little holes then you can drill one hole in the center of the distributor cap and run your eight or six wires into there and then glue them into place.