Oh wow, congrats on the find, I hope you get it! I had a 1985 M6 euro, 1988 653csi, and a 1988 M5, the e24/e28 was the last generation of really bullet proof BMWs imho and nothing today sounds like those big i6 M engines.
I’ve been fortunate to have plenty of seat time in the big 6’s over the years including E28s both M and Alpina. I've been missing a coupe over the past few years so this one will fill the bill.
It really is fun to drive, a nice mix of GT and sporting coupe. It should be good for long tours and TSD rallies. I'm already having non-TRX wheels and tires sourced so that I can keep the metric TRXs for show.