I just bought the complete package from the Menthol Guy's kit and here is what I got. I have a 2011 M3 conv and you are all welcome to come see the kit before I put it on or come watch the install.. My entire order was around $886
Yes, our kit works with 2011 M3 Conv.
Interface + back up camera kit for 2011 M3 is $495.00 and you have following options available,
1. Front camera : $159.99
2. Enable rear view while driving : $7.99
3. DVD player : $199.99
4. Video playback with audio through speakers : $7.99