Let me clear up some confusion here. First off, all of the kits that I've heard about on S2000's thus far have been dry kits which is unsafe. There is no way on most of these type of kits to ensure equal distribution to the cylinders. In addition to which it is someone's personal opinion that NOS systems are the best, not fact. I recently sold a 93 Prelude Si with a Nitrous Express direct port kit (100 shot) that ran high 12's - low 13's that was stock except for the nitrous and the exhaust, and it was an automatic. The Nitrous Express kits (at least when I bought mine) were of much higher quality than the NOS systems (ie. stainless steel tubing vs. aluminum). Also, a 100 shot with a dry kit is like playing Russian Roulette, it's not 'if it will scre up' it's 'when it will screw up'. If you want to shoot juice, go with direct port, sure it costs more but there's a reason for it. It's safer and you'll get much better performance gains. In addition to which without some sort of progressive set-up, even a 100 shot dry will play havoc on the drivetrain of the S2000.