In a 1994 SL600, the OEM dash phone is horribly outdated and unwanted. I've heard that there was a way to make a cubby hole in its place. Is this true? Was there a 'no-phone' option in the R129s that has an insertable cubby hole instead of a phone? If so, where might I be able to find the insert?

Thank you!

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The stable, er, 1 horse :
1987 190D 2.5 Turbo (running well, and bloody-well better since it's the only car I have now)