OK, I'll have a go at trying to detail the main ETCC M3 entries for 1988. I'll start with the official BMW-backed cars:
Schnitzer- full-season, 2, occasionally 3 cars- Ravaglia, van de Poele and various combinations of Fabien Giroix, Emanuele Pirro, Altfrid Heger, Markus Oestreich, Dieter Quester, Ellen Lohr
http://www.racingsportscars.com/etcc...-07-31-056.jpg
Bigazzi- full-season, again 2, sometimes 3 cars: Jacques Laffite & Olivier Grouillard backed up by varying combinations of Winni Vogt, Mark Thatcher and the Martin brothers. Cars backed by Max Meyer, or in black Lease Plan colours at Spa
http://www.racingsportscars.com/etcc...-07-31-051.jpg
Linder- just a single car at Spa- Lohr/Schmickler/Bartels
http://www.racingsportscars.com/etcc...-07-31-074.jpg
I'll do the privateers seperately- there were a lot of them....