...Exactly what I thought...but it isn't...got confirmation of this: videohttp://tinyurl.com/ydd8bq26
...no idea why they decided to alter it...maybe it's considered to be more secure - I prefer not fit radios in too well, otherwise the wretched scrotums that steal them destroy the dashboard to get it...
Very odd. The ones in your video link are US versions, the later example has a radio/cassette/cd HU which wasn't available over here.
Numerous people, me included, have swapped their C1 radio surrounds for the C2 version and no mention has been made of having problems with fit when putting the HU back in.
Could you post some photos of yours?