Welcome! Like Lino said condition is everything. Must be in top shape.I run a JWT system (Jim wolf Tech). First I had to get my ecu upgraded with a nos module from JWT. It took like 7 months! They sold me the nos kit also.I did all the install myself. Not very hard, however I swing wrenches for a living. The JWT ecu has two programs. The first is their regular program, when you switch the arming switch it goes into the nos program. Floor it and it throws the check engine light, retards timing, throws extra fuel via injectors, and puts a 100 shot in the intake. It's a dry system. I boosted mine to a 150 shot. Many bottles later and still smoking tires!
http://www.jimwolftechnology.com/tech_details.asp
Look under nos system foggers