I while he did not. Found a description of the modifications on the Russian forum on different cars. In particular, there are many fans of BMW. The article itself is
????????? ? AGS 9.22 But it is in Russian and I am still quite accurately translated. And the picture's pretty clear.
A man who has made a modification of this car end of 95th year. Judging from the directory, all the gear to the 540 and 740 the same throughout the period of production. Were replacement part numbers, but they are interchangeable. In the end, my friend would put his third gearbox on his E34 540 and everything that interests him - it 5HP30 with black label

Hier is a link on a catalog
https://bmwcats.com/bmw/E32/47350/al...hl=24001422506
I'm not a great expert in electronics, but the plus and minus can
