All of those brands will get you safely into that power range. I know at least Whipple comes as a complete kit(that is it comes with injectors, fuel pumps, etc). Dunno about the others. Kits like Saleen I have seen it come with or without certain parts depending on what kinda power you wanna make. I know JDM sells a few different Stages and flavors of it, so I don't really consider what Saleen offers, a complete kit. But that doesn't mean it's no good...just gives you more options with what to start off with.
Obviously ALL kits are complete if that means it comes with all the parts you would need for an install. Duh. Unless you get one of those "Tuner" kits, where you definately have to do some other shopping.
Decide if you want centrifugal or Twinscrew, then you can eliminate half the choices for a SC.
Most of the Twin Screw SC's are more expensive than centri's, but worth it. Centri's are usually a little more on the cheaper side, and are well worth it as well with the power they can make.
SOLD -2005 Black GT Whipple HO| Oil Seperator | Steeda Tensioner | 93 dyno tune | Autometer Cobalt | GTAs | Eibach Pro-kit | Tokico D-Specs | CHE UCA | BMR PH | BMR LCA | BMR LCA Bracket | 18x9/10 Deep Dish Bullits
2013 Shelby GT500