http://www.thehemi.com/news.php?id=20080419-1
It didn't take long for Hennessey to use knowledge gained from years of boosting power from the Viper supercar to increase output of Dodge's latest performance model. Once again the tuner has turned to turbocharging technology for added oomph, in this case churning out up to 725hp from a stroked and reinforced 7.0L HEMI V8.