Hi guys,
I've sent out the PDF to you all. Hope you all got it, let me know if you didn't.
When I retro fitted mine on my last A3 I bought a kit from VAG parts, but as you all probably know, they've gone down now so I wouldn't have thought it's still available. It came with the roof rails, fixings and instructions but most importantly the templates for where to drill the holes in your roof. For those of you thinking of just swapping it's not an issue but for those fitting for the first time, I wouldn't attempt to do it unless you have these templates it would be almost impossible to guess where the holes have to be drilled.
I just wanted to let you all know that I've still got the templates and I'm quite happy to pass them on to anyone that want's them. I'd hope they could be passed around so everyone gets to benefit from them (I wouldn't have thought they are available to buy).
Fitting of the rails is quite straight forward, it's just a lot of work getting the roof lining out. Typical Audi build quality in that you have to start in the boot and take almost every panel off the inside of the car as there are hidden fixings that need to be revealed. It's not bad just time consuming and at least with the instructions you know where the fixings are!
I drilled my holes using a cone cutter (I think that's what it's called). It's a stepped drill bit so you start with a small hole and the bit just drills drops into the hole making the hole bigger as you go. It's a lot safer than trying to use normal drill bit's and risking them sliding accross your roof. I'll post a pic up later.
The roof rails do come up occasionally. As RS mentioned, more often on ebay.de. They are called dachreling. Bear in mind you also need adjustable fixings, which come to about £40 from Audi if the rails don't come with them.
The part numbers are in the instructions so it could be found out how much they are from Audi. I know they're not cheap though.
Hope that helps.