Skip the jet stuff. If you are going to have a cpu in the truck hptuners or e.f.i.live. If you are going to want to be able to tune it going down the road hands down the best two systems out that I know of. Gives you COMPLETE details of what your ride is doing while its doing it. Its what the pros use. haha.
If you are wanting 500 on motor you will need some pretty serious cubes... If you want that number on the ground a least. Otherwise I think everyone will agree that Turbo is the way to go... That or

... or just do both and cross your fingers it dont blow up like I am wanting to try! haha.