FYI Beaner,

The trans in the SRT's in the same as the Big boy MB cars use. It can handle 600hp+

My 2 cents:

I am a true lover of this car and its concept, I respect what you want to do, but I feel it would be an injustice to the workmanship and engineering of the crossfire. It is possible to turbo charge this car and get over 400hp. The size and weight of this car would greatly limit using any hp above that point. But again I repect your dream, afterall it is your dream.

Best of luck