For a 75 shot or less, the Zex kit is the best out there. It automatically adjusts the added fuel pressure based on the pressure of the nitrous, that way the a/f mixture is always good...not too rich, not too lean. I personally don't like single fogger wet kits, where there is one nozzle in the intake that sprays fuel and nitrous. Most people think they are automatically safer because they add fuel, but they really aren't. The fuel can easily puddle in the intake manifold and ignite, causing a nitrous backfire in the intake tract. I've seen a few cars catch on fire from this...I also don't like the idea of fuel spraying through my intake pipe and throttle body. As for the chip, stay away from it. The way those chips make power is by advancing ignition timing, and this is not good with nitrous/boost. On a 75 shot you'll probably need to retard your ignition timing about 2-3 degrees, maybe less. Set it at 3 degrees retarded, make a pass, and check your plugs. If they look good, add a degree, and do it again. I've known people to run a 75 shot on stock timing. As for plugs, you want ngk coppers...if you're gonna go 75 shot, get the 2 step colder 8 series plug to be safe, and gap it at .030"...that should do it.