If you are looking for some serious power, you might want to consider turbocharging the engine. It may involve pulling the engine and building it to accomodate the boost involved, but you'll end up with a custom exhaust system too. It all depends on just how radical you want to get. A supercharger is great too--like a paxton for instance or others.
The turbo would most likely have to be custom fitted or built to the specs for power you are looking for, but when all is said and done, you would have a very unique machine that would have a special familiar whine and power like you've never dreamed of--its all a matter of how much you want to spend, or can afford, and what you ultimately want to use it for.

 

as of right now the reason i like having a V6 is everyone has a hemi nemore so i figured wtf. also i got a good deal but newayz. right now i got my k&n intake and the jet chip is ordered then ima get a exhaust of some kind then add the throttle body and prolly call it good. after that ima drop it or air bag it and do my stereo then paint. hoping for a one of a kind but i know that wont happen