Hello Mario,
welcome, you came to the right place for you questions.
There are a number of ways to get the answers:
1. Click on the "Search" button above, type in "floor panels" and you get 3 pages with post that might interest you.
But the short answer for now is: K&K (
http://www.kkmfg.com/index.php) they reproduce the panels for many years and many members here have installed them.
Of course, you can also buy them from the dealer for money.
Make sure, however, that your bodyshop is very familiar with these cars and how to do it.
2. Information about your car is provided by the "data card". If you don't have one then take a look here, it tells you what the card provides and how to get one:
http://www.sl113.org/wiki/DataCard/StartSpend some time browsing the technical manual.
3. and finally, you can ask some of us in person, just come by at the brewery on December 17!
Here are the details:
http://www.sl113.org/forums/index.php?topic=15540.0Hope to see you there!