Just bought a 5.7 for my Duster

So i just picked up a 5.7 for my 73 duster and am super excited to drop it in my car. My father and i have been doing a bunch of research and have a semi clear idea of what we are getting into. I have been reading a lot but would like to see if someone might point me into the right direction for adding power to this motor. I have a built 450 hp 360 on an engine stand and would like to build a monster with the hemi to smoke my current engine.

I would like to keep the EFI, and would like to get as much power out of the motor doing everything shy of a supercharger or turbo.

What do i need to look for? I would love if someone could point me in the right direction to a complete build. What kind of cams are out there, head work? tuner? I need the works please!!!

Thanks