[the head]

There are several kits out there that you can use. I recommend a wet kit (simply because I'm not sure how to hook a dry system to our vehicles in particular). NOS, Nitrous Xpress, Cold Fusion, and Zex to name a few. I'm running a mostly NOS system with Cold Fusion solenoids. For a bottle heater I use the NOS one and I just have mine rigged with a master power switch and a manual push button.