higher octane fuel for when you spray (like the 100 octane from sunoco we get around here) ... colder plugs are a good step... extra injector won't be needed cause you will tune the nitrous kit by upsizing/downsizing the fuel jet it uses to attain a decent air fuel ratio ... don't spray for longer than the 13 seconds it will take to get your 1/4 run in ... allow plenty of time to pass between runs so the cooling system can normalize the engine temps again (this is how we keep our SRT-4 from dieing with the tiny turbo, our EGT's are crazy high) ...

i wish we could use a system like a crane ignition, it could wired it to retard timing on spray, but with the crazy 12 spark plug with individual trigger for each (they fire one after another and alternate who goes first every time) it seems like we are left without such a option ... but again, a 50 shot is not a big deal for a v6 of this size to handle, plus the nitrous has a intercooling effect as well that is beneficial to reducing chances of detonation ... it ought to be fine ... we sprayed a dry 50 shot on our ol' 2.0 dohc non turbo for a year at it was ok even with a mopar ecu that advanced the timing a bunch, and yes we did follow the tips i mentioned ...

a good way to go safely about this is to purchase a inexpensive obd-2 logger ($100 - $150 dollars) that allows you to watch your ignition timing ... run the smallest nitrous jet ... watch the timing, if it starts dropping like crazy, you know the knock sensors are picking up detonation and you ought to back off ... this engine bay has plenty of insulation so you won't hear it, but it sounds like marbles in a tin can, you hear if a few times, and the motor is toast usually ...

also, don't touch dry kits ... wet kit is the way to go (meaning it provides fuel with a extra solenoid and fuel jets, not a fuel pressure rise or injector pulsewidth increase trick) ...

man, work is quiet at this time.