( http://www.TFLcar.com ) If you have been very good this Christmas Santa may put a V10 2013 SRT Viper and/or Viper GTS under your Christmas tree. Because according to Chrysler the new Viper will be available staring right around Christmas of 2012. But before you unwrap this snake you may want to learn a bit about what makes it so powerful. n this video tech demo we chat with the Viper engineer and owner Graham Henckel about the heart of the new car the monster V10 engine that develops well over 600 Horsepower.