Reasonably easy to fit, as long as you can remove your head unit following the instructions in here
http://www.mini2.com/forum/faq.php?f..._faq_head_unit
The unit then plugs into the back of the headunit. Decide where you want the ipod connection and run the cables to there, mounting the box that comes with the unit somewhere out of sight. My connection is in the storgae cubby hole on the drivers side and the box is mounted behind the knee bolster. You will probably need to drill a hole to poke the connections through but the kit comes with gromits to seal the hole afterwards. Reasonably simple but not as simple as messing with the head units in other cars.