Couple questions here... Ok Is nitrous harder on your bearing than heads and cam of equivalent power? Also since you have more fuel and O2 its like having a larger engine or one that flows more air like heads and cam, so for exhaust would I be good with a 3 or 3.5" catback... I have no headers yet but I will get some when I decide on what else im doing to the engine.

 

Yes, it's harder on bearings. You are correct, nitrous will really benefit from a freer flowing exhaust due to the larger quantity of exhaust gasses produced.

Rich Krause