I did mine a few month ago. It's not a hard job, in fact it's very easy, but like most things with these cars falls more under the 'art' heading. You just need the panels, a drill and the requisite number of screws and chrome washer type things that hold the panel. Make sure you get the correct panels: i.e left/right hand drive, and I think there are differences for cars with AC, etc. I got mine from SLS and they're fine. Much like Cees, mine did not fit perfectly. The centre panel sort of sits there, whilst the flanking ones took quite a bit of bending and screwing about (i.e screwing the panels on and off and moving the holes around) to get them to stay in place. But it isn't hard.
JH