I fitted my phone the other week, takes a couple of hours to do a neat job,
1, No lead available but I used a 14 pin relay from maplins and made up a loom so that when the phone rings it cuts the ignition feed to the stereo and puts the sound through the front speaker. about a fiver for the relay
2. Got my console from Plummer communications, nice leather and ooooozes class
3. Used a tax disc aerial, about £15 and works fine
Hope this helps
Chris