I have put both on mine, its not technically difficult to do. The kits are readily availble from places like GSF, etc. The only problem I found was actually getting the electric window mechanism into the door. It took 2 of us several hours, and a lot of cut and bruised fingers to get it in, but they do fit and are nice once in. Its worth buying a good kit for both the windows and central locking.
Hope this is some help
A
