Nitrous exhaust and bearings questions

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