I possess a b18a1. That I would like to add a beefy shot of nos. (100-125 shot) In the not to distant future I will have my aem ems installed and tuned (hopefully well) and will be looking to hit around 225-240ish hp (dynoed 230 on stock basemap).
List of mods for the bottom end.
Wiseco 9.5-1 pistons (forged)
Scat Rods (forged)
Crank Girdle
Gsr Windage Tray w/ Gsr pickup tube
Orbit Performance Oil Pump
Moroso Oil pan
Arp Rod bolts
Arp Head studs
Gsr Main Studs
Acl Race Main Bearings/thrust washers
Crank balance
other info that may help. Stock fuel rail, stock inj, stock pump.

As for the Head it is entirely stock with the exception ported intake and exhaust ports and resurfaced cyclinder heads. Unknown miles on the head.

My question exactly is in terms of durability what could possibly go wrong in my head from such a shot of nos?

 

I wouldn't worry about anything in the head breaking unless your tune is bad or you over rev the hell out of it. you might want to run a nitrous window switch so your not spraying near the shift point in the rpm range this will help safen things up a bit. make sure you run good bottle pressure and I would run a walboro 255 at the very least. if its a wet shot you can get away with the stock injectors but not if you want to run dry. I would replace the fuel filter. get a wide band to make sure things stay safe and let that thing eat.

 

I already have a wide band. But even though it is wet would that require a 255 pump?
If I purchased one would my factory fuel pressure regulator be sufficient..