p.s.
"Der originale Ansaugschnorchel vom E36 M3 3.2"
That's the M3 3.0 snorkel. As funny as it is, the 3.2 did not get the snorkel with the extra connection to the brake duct.
You can check the ETK if you don't believe me (and I have an M3 3.2 myself). And a 328i cabrio as well. Your journal reminds me of myself, when I started a similar project back in 2006.
The Gepackraumnetz, while original BMW, is not the original used during E36 production. Yes it's 90% the same, but still. It's in the details ;) (see my Syndikat journal for a pic).
BMW has changed to many parts now. I always bought everything new, but that's not an option anymore for all parts.