I collect mostly diecast race cars and muscle cars. My preferred scale for muscle cars is 1/18th. I bought the 1/18th AutoArt Interceptor and within a week I decided to weather it. I wanted some more MM cars to display it with, so I've made a few customs from various 1/18 diecasts.
Here are some pictures of cars I've done so far, including some explanation of how I did each one. There will be more to come.
Here's the stuff I did to my AutoArt 1/18th Interceptor. Just basic painted weathering to match the on-screen car, which included painting the gas cans green. I also scratchbuilt some little odds and ends to throw inside, including a toolbox, tarp, and a rope. The cooking pot came from an old Star Wars diorama kit.
More shots of the weathering, these ones I setup in my backyard.
My first real project car was based on a 1/18th Ertl 1969 GTO Judge kit, I planned to turn it into a marauder car. Working from a kit was nice, since usually I have to butcher a lot of stuff to get a pre-made diecast apart to properly customise it.
The first thing I did was sand down the carousel red it was painted in and add a hoodscoop, which I made out of a 1/64th car display case that I cut down.
After that the car was primed and made ready for paint. Somewhere along the line I decided I didn't like the wheels and wanted something more rugged looking. I got a set of GMP Cragar Soft 8 steel wheels that look much tougher in my opinion, more befitting of a MM car.
I ended up painting it similar to the Force 10 chargers in the Road Warrior dull gray with a red stripe, tweaked to better fit the bodystyle. It also got a pair of strobes that were 1/24 "bubblegum" police lights on the roof and airhorns, made from lionel train parts. I really wasn't going for a specific car here, so it's by no means intended to be movie accurate. I just wanted a U.S. muscle car that looked like it could have fit in with the other bad guy cars in Humungus' armada. I use Rustoleum and Krylon primers on metal cars, painted with Testors acrylics top-coated in Testors clear Lacquers.
After the body was completed, the interior, chassis and motor had to be put together. I detailed the Ram Air 455 with extra wiring and plumbing that wasn't included on the kit.
For the interior, I sadly decided not to attempt to convert to RHD. I did, however add a rollcage that I scratchbuilt from Evergreen styrene tubing and brass wire.
After final assembly I added some more details, including a resin 1/18 police pushbar and some extra headlights, that came off an Ertl '34 Ford. After that I weathered the whole thing.
My next project is a still in-progress Red Bat XA. That one I made out of a SunStar 1/18 1971 Mustang Mach 1. Here is a picture of the victim...more to come soon.
since it has the actual rims used on the movie car? You can prob snag one off EGay for cheap? Also you don't need to clear coat it as the pic reference you have is a car built by a member by the name of Dee Vyper and he made his replica all shiny and purty 
compared to the rough looking one form the movie.
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