Climate conversion is a dash out job due to having to replace the heater box which has 2 servo motors to operate flaps instead of cable,s and 3 sensors.
So you will need the following.
Heater box with servo,s and sensors.
Sun sensor on top of dash.
Exterior temp sensor behind passenger fog light.
Transistor pack and fitting which replaces resistor pack on top of blower unit.
LCD control unit, console face plate and the sensor fan on rear of face plate.
You also need the extra wiring to connect it all up and an extra relay which sits behind console for aircon. There,s about 8 wires to connect in if I remember correctly.
I hav most of the parts in my shed as it's handy to keep spares due to most no longer being available. There is now a lot of info on carrying out the job on old posts of mine and a couple of others who I helped on forum, unlike when I did my first one as it had not been done before lol.
I know I have the heater box but there is only one servo as I sold one to a member who was desperate for a servo and could not find one. The 3 sensors and wiring with wire for servos. I have a couple of exterior temp sensors one has the other connector to main loom. I have 2 transistor packs one has the adaptor plate to fix to blower unit. Also have a sunsensor and wire for top of dash. Most of loom needed is there but I don't have the bit with the relay but that can be made up with any original rover relay and socket of same type to connect to the loom. I have the load unit but it's was adapted to take 2 extra heated seat switches as I have rear heated seats as well as fronts
I also have my daughters mk2 to strip or sell which has climate conversion, rear parking sensors, heated fron at seats and rear electric windows all of which I fitted. Also has Honda front interior light and Renault rear interior light which have map reading lights and rear have red ambient led, illuminated switches and dimmer. Everything works on car, flew through last few mots no advisories, has longlife cat back system and is in firefrost red. It's a 1.8 with full 180 kit and 11 spokes 2 new tyres on front which have only done couple of hundred miles as she bought a new Nissan SUV in August when she had her son so ZS has been stood since.