Here is a copy and paste of what he wrote on another site...

Can anyone give me the part# for the CD changer bracket for a R129 SL... I want to have a US bracket since they are a lot easier (amongst other things) to install as the euro one...
I don't know whether the nearby (Dutch) dealer can find a US part#...

greetingz,

Thanks for your help DTMFan. I already got the part# from someone on benzsport.com
Currently our nearby MB dealer is searching the part for me (they don't know whether they can get hold of a US part, but they will try because I was their best buying privateer last month :D .

greetingz,