They're all basically the same especially when comparing nozzle kits. I have a nos kit on my 03 cobra, I originally bought the nos cobra specific kit but sold the plate because it was quite a bit smaller than the opening on the blower/plenum so got a nozzle for it. The only kit that I dont usually recommend is zex. Mainly because I dont like the idea of having a single unit that has both "solenoids" inside of it so if something happens you have to replace it all. Also I dont like how they rate their hp at flywheel increase instead of wheel. I have a .040 jet which depending on which calculator you look at is between a 50 and 75 shot. I picked up 70/100 with it as I have a slightly bigger fuel jet than most to keep it safe as possible.
Have yet to use it on my terminator but on my old 99 cobra it made about 85 horses on the nitrous dyno pulls we did. This spring gonna get the 03 retuned and try a 75 shot.