Careful with the Superchager. Do your homework and not from the guys making the SC. I been working with a shop that does extensive work even for professional racing outfits for about two years now. There are several SC options for the Charger 5.7 Hemi out there but the problem is dentotation. They have seen MANY 5.7's go to junk heap over it. Most of these SC companies are marketing their product without proper testing and validation.

Go slow, it takes more then an SC to do it right. Very often it takes internals as well as engine control unit (software/hardware) modification.

Good luck.