I would recommend you to buy an endoskop camera (100€?) and to visit an experienced e9 owner in your area.
Learn about the critical topics of an e9 and how to use the endoskop.
Going inside; then the A-pillar down and see at the buttom.
See added picture. NOT visible from outside.
Thank you for the advice. I can get an Endoscope...but what points on the car give me access to the internals? You mention the A post? Is there a hole in there I can use. Any information would be very helpful. Thank you