I have a partial dry nitrous kit I aquired and have no need for. It is a pair of NOS powershot solenoids with fittings, between the solenoids is the transfer unit that supplies pressure to the FPR. It also has a nozzle with fittings and about 10' of line to go to the bottle.
It would need a bottle, a WOT switch and wiring and a line to connect the nozzle to the solenoid for it to work.
I'm asking $75
Those things pick up next to no power with an exhaust. Getting rid of the cats nets maybe a horsepower or two - nothing significant - and people pay ungodly amounts of money for custom exhausts for them. Yet twin K&N air filters (they use 2 Lightning air filters) pick up a consistent 7-10rwhp.
PLX is coming out with a unit that will use the NTK sensor, we have a prototype unit from them now. Any of the units that use the NTK sensor are good.
As far as units that use the LSU, Zeitronix takes the cake (we have 2 of them, they work great).