I wanted a Rally car but really didn’t want to spend $400 for one. A Rally car is basically a 4wd Slash or they share a ton of parts in common. I already had a Platinum 4wd Slash so I decided to make it into a rally car. Not much to change. the front bumper to the low slung one with the foam and body mounts. Replace the rear body mounts and the rear bumper with the same bumper that is on the Stampede. You will also want some wheels and tires off a Rally car. The best place I found to get the wheels and tires are the ebay liquidators. For about $60 I had all the parts to convert the 4wd Slash to a Rally car. You will also want to get a Rally type body I went with the stock Traxxas Rally body which came in clear so I can use my own paint scheme.