modify but with a dremil or similar At work
At home

"I can't always believe facts I read on the web" - Charles Dickens

winner by default of the tractor vs caravan race

I actually use the LR Audio Module with iPhone 3G. Works like a charm, all steering wheel controls are fully functional. When someone calls, music fades and the phone uses its own speaker to play a ringtone. The ringtone is also repeated in ear-on bluetooth module. Also, the display changes - instead of an album cover, it shows caller's name and his picture (if any).

Indeed, the cradle was about 1 cm short, but I managed to modify it without too much hacking. I simply opened it and realised, that the top mounting can be moved. I did so, used some silicon glue to keep it firmly attached to the cradle's main body.
If someone wants a picture, PM me.