Sorry, haven't got any pictures, but fitted a CK3100 to my SE with an RCD300. I had to buy a special adaptor cable for the Parrot ISO leads to fit the VW audio unit.
To get at my unit, you have to very carefully prise the plasic radio surround off and there are a couple of screws holding the radio in.
WHATEVER YOU DO DON'T DISCONNECT THE AIRBAG WARNING LIGHT AS IF YOU FLICK THE IGNITION ON, YOU WILL HAVE AN AIRBAG FAULT!!! Don't ask how I know!!
You'll have to find an auxilliary ignition feed as there isn't one at the radio.
Only other thing is route the mivrophone cable carefully so it doesn't interfere with the airbags.
Ian.