We opted to upgrade to a G-Force built Viper T56 Dog Box 1-4 6-Speed unit. While the car was down for the transmission swap, we took the time to upgrade the turbocharger as well, installing a new billet compressor wheel and upgraded, larger race style compressor cover. In doing this we have made substantially more power over the curve and more peak power as a result (see the dyno graph at the end of the video for a comparison). This beast laid down an impressive 726whp @ 17psi (low boost setting). Next stop? The drag strip!
http://www.youtube.com/watch?v=IOsPM9F7_z8