The Viper is totally stock. I don't know anything about the Mustang accept that it's not quicker than the viper.
Maybe one of you Ford guys can tell what year it is, etc.
[ame=http://www.youtube.com/watch?v=83l3fIIWk_0]GTS Viper vs GT500 - YouTube[/ame]
[ame=http://www.youtube.com/watch?v=_fpn73ihwQA]GTS Viper vs GT500 3rd Race - YouTube[/ame]
[ame=http://www.youtube.com/watch?v=83l3fIIWk_0]GTS Viper vs GT500 - YouTube[/ame]
[ame=http://www.youtube.com/watch?v=_fpn73ihwQA]GTS Viper vs GT500 3rd Race - YouTube[/ame]