I had one for a short time -- it was a special version; the Tii. It was BMW's attempt at a sport package with an upgraded suspension and mechanical Kugelfischer fuel injection. Few were made and I sold it to pay for college expenses. In hindsight the decision was a good one, but it still hurts almost 40 years later.
There was also a Ti model that used two carbs with a high compression head, but the Tii with fuel injection was "the bomb" at that time.
I also had a 2002, Maroon '71.
That thing rode like it was on rails!
I found a set (2) of dual throat side draft Solexes, and swapped out the down draft Weber (IIRC).
That engine came alive and the sound from the Solexes was sweet!
I took it on a cross country trip to visit a friend in SLC. We drove the wheels off that thing, up and down the canyon roads.