I recently installed a wet nitrous system into my 2004 Dodge Ram 1500. It like crack juice!
It was fairly simple. The only thing that is different is installing the wide open throttle (WOT) wire so that it does not confuse the computer with wrong voltages. The steel braided line from the tank to the unit(unit mounted on side of air box) ran cleanly through a pre drilled hole behind the seat. There is just a plastic insert, easily visible once you remove the cargo storage unit behind the seat and lift up the carpet. If you are unsure where it is still, simply put a flashlight under the truck and look for light coming through the white plastic cap. Any questions please feel free to ask. I also installed a 3 guage pod up the side. Oil Pressure(MECH) Tran Temp(Auto) and nitrous pressure.
For some reason it will not allow me to upload photos so please msg me if you need help or some photos to aid your thoughts.