spray away.. the 04-06 really love and react well to nitrous. if ur going to spray alot.. then go with wet kit. if its once in while.. then dry kit and map it for nitrous. 40 dry shot seems to be most people want to spray.. tho i have heard of people spraying 50-80 dry. 40 shot can be alot in lower gears.. so u might want progressive controler.. or put smaller jet in and spray 20-30 shot to it.
wet kit on 04... is a mother... of an install.. there is no room.. its major pain.. dry shot is simple, easy, cheaper... less hassle. ive spent hours moving, trying to put stuff in one place,move it...and such. i can install dry kit start to finish in about 30 mins. spent 6 weeks while my arm was getting done in feb of 04 trying to put wet kit on bike and get everything where it would clear... 6 weeks !!! go with dry kit.