[HardcoreZ28]

I agree with what alamantia and Billy are saying....don't go removing too many of the "creature comforts" if it's a daily driver. If your A/C doesn't work and you don't plan on spending the bucks to fix it then you can remove it. The smog pump can get you in trouble at inspection time so if you remove it keep it around to reinstall during inspection time. And don't forget to plug up the diverter valves if you remove it or you'll have one hell of a leak.
As for removing the p/s....why the hell would you do that? That whole assembly might add 20lbs to the car...if that. And manual steering a car setup for power steering is not an efficient arm workout.