I think the Viper is the main reason all of the Dodge trucks and neons have Viper stripes all over them. Plus, Shelby did help with the development of the Viper. There was even a very limited edition Shelby Viper.
After ford dumped shelby around the 70s I think, he went off and went to dodge. He designed the Viper, and did the daytona dakota as well. He's the reason SRT was started, and also the reason SVO (the turbo 4 banger eco-powers of the mid 80s), then later SVT (the powerhouse V8s after 93), and now he is back at ford with SVT making the GT500. Did you know Shelby sued ford after they started using the Mustang GT designation and expecially when they used the Mustang Cobra? The GT and Cobra designations were his and he wanted royalties, and I think he did get something.