yeah the windows dont take long to do at all, and i agree with JohnnyN - proper rivets, and mind ya knuckles on the plugs... Well worth it, Also done the blue led conversion... and I cheated, get yourself down the scrappy and pick up as many preface switches as you need fitting... including the light control and the steering wheel controls, then get on ebay and look for a seller called AndyClo, - he was doing a deal where if you paid 99p and sent double switches, he would convert one set and send them back to ya, so send 20 switches to him, and get 10 back.. its a good idea and worked out VERY cheap for me when i did my conversion, no soldering and messing about, plus you know the colour will be the same right the way through.. 🙂 its a really good look 🙂
Good Luck, and if ya get stuck, pm me and I'll see if i can dig out some details 🙂