Yes it can be done but is a hassle as far as I can see. I have an article on a guy with a '89 535i sport (M5 body kit, metric cross spoke alloys and 240 Michelin TRX tyres(puke) and M-tech suspension which mates stiffer dampers to standard springs) The guy in the magazine added a M5 binnicle but says it was a lot of hassle but no info.