W203 C180 Kompressor 2006 radio fitting clips wanted

[robdx]

Hi I have a W203 C180 2006 so facelift model. I have fitted a sucession of aftermarket radios over last 2 years, I have some how managed to lose 3 out of 4 of the clips that fit over the screw points on the radio frame...See picture for the exact clips
Does anyone have any idea where I could aquire some, have seen a few 2nd hand radios about but none with the clips on. Without them the 2 panels above and below the radio frame do not fit back in tight