Here is an old post in E30 Bimmerforums from Baur Guru Jeroen J. showing a magazine writeup on the E30 pickup truck converted from a Baur. It still shows up occasionally at car shows in Europe, and there is a second example in the US.
Here it is again at show in Germany.
Here is another example, but this one is E21 Baur-based.
MÜHLDORF AM INN CLASSIC CAR SHOW 2008
Then there is THIS one: a one-off M3 pickup with what looks like a Baur roof!
"This M3 pickup was used strictly on the company’s premises, as it lacks street homologation. It was obviously used with little mercy, and it served as inspiration for this year’s April Fools’ Day project. Besides this company project, a few E30 pickups were actually built by small aftermarket companies in the 1980s—specifically for the Greek market, to use a tax loophole."