When I actually have a fast car? Anytime you want to get your POS F body spanked by 1.6L four banger drive your butt down to San Antonio Raceway. I know the difference between the nitrous kits and it is a NOS brand kit he has dipshit. I'm not trying to start anything just stating what I know. BTW, I used to own a 1993 Z28, it was the biggest POS I have ever owned. I actually sold my 280ZX to get it when I was 17 and I have regretted it ever since. As I said before, you know nothing about Nissans.