Front back nitrogen setup?'s

Hey guys what do i need to get for a nitrogen setup. My friend cody has his truck on it but i cant get a hold of him. What parts do i need to buy. Do i need compressors? I know i need the tank(s). What kind of line do i need and how much? I already have the brackets for the rear to get bagged and i have the 4 link parallel style sd.com. Do i need valves if so how many? And anything else you can think of. Thanks again guys.

you need a regulator with a good size delivery psi, a 1/2" tube 1/4" npt fitting and then from there you can plumb that to a manifold or into a tank.