Nitesite...
For the aircon, you will have to remove...
(1) the condensor (radiator) at the front
(2) the other little radiator inside the car, which is used to cool the air
- to remove this you may need to get some 'standard' fan ducting from
the scrapyard, as the air con one will probably be a different shape
(3) The receiver-dryer (a long cylinder shaped thing, like 1/2 used toilet roll
in size
(4) The compressor, which will probably be near the alternator
(5) The pipework, which goes between the compressor, the receiver dryer,
and the two radiators.
* The refrigerant needs to be removed first * or you can get severe frostbite
requiring amputation, or come to harm by inhaling toxic fumes.
If I could find the time, I would be happy to help you remove the aircon stuff,
on a weekend day, if you still want to do so. You would need to get the
refrigerant removed 1st, by an aircon specialist. If there is a scrapyard
nearby, the replacement 'normal' parts could also be obtained as and when
they are needed during the removal.
**I would also be happy to have the parts, if you don't want it anymore, to
fit to my Micra! - as I'm not really that interested in performance**
As noted above, when switched off, it is only a weight increase, not a bhp
decrease, so you still need to decide whether to remove it!.