If you want 550plus-hp, the 2012 SRT8 may get a factory option to add an Eaton supercharger (20 Photos)

It's still rumors but if Chrysler/Dodge hooks up an Eaton supercharger to the 6.4L, the SRT8 could easily churn out over 550-hp (in fact, it should be able to pump out an additional 100-hp). We'll see.