Actually , with only 9 cars ever being built, it lends itself more to exclaiming to the World what a phenomenal engine the Viper V10 is. There is a long history in the 50s and 60s of European sports cars using Chrysler motors, so this is a good sign , I would think, that a very limited automobile would run a Viper V10.
Speciality cars ,in very low numbers, will run Mercedes, BMW, Corvette, etc. engines, and this is just an example of one choosing one of the best internal combustion beasts on this Earth.
I see it as a positive, and good way to keep the name out there when we have no current car, and with so few ever built it just shows they had a choice for monster power and they choose our favorite form of motivation.
Just my humble opinion, but things are looking good for the 2013 model and if anything this should dissuade those doomsayers who think the next Viper might have a V8 -- notta goin ta happin !!!