spercharger ?'s

you won't need anything to make it run, as it is a bolt on kit. to be on the safe side, maybe a higher output fuel pump. Gauges (fuel/boost) aren't neccesary but they're cool nonetheless. you already have a K/N, go for the blower now. Some will say build a foundation before the house, good point, but don't abuse the charger and you'll be fine. good luck
forgot to say this, make sure your engine is up to handling a charger, and give a good tune prior/during install time, enjoy