s1x and xp are great cams IMO for nitrous. If you plan to inter-cool one day i would get the s1x if you plan to not inter-cool and just spray get the xp. Or you can have PRJ grind you a cam specifically for your needs. He's one of the best in the 3800 world hands down. Besides one other person his advice is the only advice i'll follow. I HATE following everyone else's setups, i am not a follower nor will i ever be.