2001 Mitsubishi Eclipse Spyder Gt Automatic

I have a 2001 Mitsubishi Eclipse Spyder Gt that is an automatic and I've been redoing the whole interior and exterior making the car look good and now it is time for me to move on into the engine. I do not know a lot about engines in cars so it is kind of difficult for me to try and reach my goal of getting around 400hp at the wheel. I don't even know if it is possible for me to reach that amount of hp with a 3.0L V6 but if it is let me know. Also if you have any tips on how to reach this goal let me know (even options up to doing an engine swap). Thank you

Moved to 2000+ Eclipse section from Eclipse/Talon/Laser section

thanks and sorry about that.

All the important stickys at the top should answer your questions.

Alright thanks. But the only one that really talked about it was the engine swap one

Nevermind lol I didnt read through all of one of the posts and found more info on it. Still feel free to put in your ideas