Options: easiest is you go to the dealer and ask him to make a print out based on the chassis number.
If he is online it is done within a minute.
Another possibility is to remove the rear seat and look for a paper where all the options are listed.
http://shrubbery.student.utwente.nl/...ptions750.html
The options codes numbers you can find out on the same link on Johan's page under miscelaneous links.
Your engine is a 735 = a straight six engine. This is not addected by the Nikasil/Alusil issue. You have an M30B35 engine, affected engines were the V8 M60 and M62 engines.