Any advice on finding out about retro fit air con & remote central locking for a Honda Jazz?

I bought a used Jazz at the weekend which I love driving but have so far been unable to find any information about retro fitting extras. Does anyone know of any websites so I can get ballpark figures please?|||It'll be POSSIBLE to retro-fit these extras, but the aircon, in particular will be dear. Think 拢1,000 plus. If the car already has central locking, then a remote plipper function shouldn't be too dear to add, maybe 拢100 or so. Try an alarm fitting company.