I haven't seen or used the Becker Mexico so not much I can add to your original request. However, I have seen these in person and I was quite impressed. Whilst it is quite costly, it brings together some nice tech in a single din radio. The Universal version is the one to look at. If I recall correctly, Porsche used to offer this as well Mercedes for their classic range. There is a decent forum thread I can send if interested.
JLR Classic Look Single DIN Radio With Navigation
