To get to 415 HP, your choices would be a supercharger or turbos. The current bolt on choice becomes a RIPP Supercharger or a Sprintex. RIPP is more common than Sprintex, and generally more HP. But along with voiding your warranty on the driveline at least, you're talking $6,000 + installation + any custom dyno tuning costs. It will also require running 91 - 93 octane gas. It's certainly doable, and is considered a bolt on
* * Due to the overwhelming amount of orders please allow 10 weeks for your order to be assembled and shipped * * Please note: These systems require professional installation with mechanical knowledge and support. Tune included, Vehicles should be DYNO tested by a professional. 11-12psi of...
rippmods.com
But like it's Hemi brethren, there is no cheap HP to be found
If having more power is the goal, and having chosen the V6, the path is not easy, and there will still be many cars faster and more powerful than you. I enjoy my V6, and would have gotten a V8 at least if I wanted more power. Sound is also a major issue, the V6 sound and accompanying blow off whoosh is not close to the awesome V8 sound IMHO
A Guy