i wanna say my zex kit was the favorite kit ive had yet, between that and the hidden direct port kit. 

more info on the zex kit though:  black-ground,  red-arming switch,  white-white on the tb.  when gettin the brain box to sense the voltage at wot, you need to do the setup steps with the car in the on position, not running, and place it in first gear.  the car must be in a gear because they have a neutral safety switch.  this is by far the easiest kit i have ever installed.  many people complain about the zex kit, but i can assure you 90% of them never had teh kit themselves, take it from someone whos had multiple kits, like me.

some people also disagree with the timing issue..  but i actually ran the 100 shot on my car with stock timing, not a whole lot but i did, the safc picked up very little off the knock sensor like this.  it is definitely safer to retard your timing even if you are only doing a 75 shot.