I've got it on my 240D right now and as mentioned it does obscure the view of the gauges.I like the "feel" much better though,I think you just get too much leverage with that large diameter stock wheel.
I'll start looking on e-bay to find the correct adapter as I really would like to use this on the 450SL
No camera right now,but I'll try to post a pic of this later.I think it is the one another posted about with the 4 horn buttons.
I'm sure it's worth more than what I paid for it if I decide I don't like it.