If you people want to lose weight to the extent of removing the a/c and a couple of you to remove the p/s I think a couple of things would lose even more weight.
If your removing the a/c and condenser...why stop there? What about half the heater box? What about the duct work? What about evaporator?
If you keep some of your accesories on the engine...what about the brackets? A few well placed holes or slots can make some good weight losses.
Remove the rear window regulators and lock the windows in up position(5-10lbs).
Since you no longer have the regulators and more than likely don't have a rear seat, remove the support and crash bars out of the rear doors...they are glued in and weigh around 10-15lbs a piece.
If your car is undercoated, get out your chemicals and scrapers, if not still get them out. I have seen as much as 75lbs. removed on undercoating alone. Remove the carpet, take the sound insulation out. Then get them chemicals out and remove the bonded sound deadening on the floor 20-30lbs.
Car has to appear stock? Cut out the stock battery, wire a tractor battery to the stock batteries terminals and place the tractor battery inside the stock battery (25lbs).
Subframe...Oh the subframe.. Lets just say if you look at it and can't see how to lose at least 30lbs. you aren't creative at all. There are many places to take weight out without reducing structrual integrity.
Front bumper support. Again. Easy 15-25lbs.
Rear bumper support. Again. Easy 15-25lbs.
Gastank. OMG.. the stock gas tank empty weighs at least 65lbs. It has more baffles, tubes, etc. than you can believe. How do I know, I've cut one open. With a couple of well placed baffles I think an easy 30-35lbs of weight removal is possible.
eh I'm tired.
Of course this is all for a track car. Saftey would be comprimised.