As far as i am awear all civic type r's had air con
The only thing you need to take off is the air con pump
The belt is avalible from honda
The lamda probs the more wire the better if possible get them with the plugs on the end
They are avalilble from honda but they want £250 each for them
I managed to get some second hand ones for £50 each but mine aint got the plugs so matching the wires is an issue but i think i have solved that but wont no untill the engine is started
Regards
Jerry