Thank you very much for that hint!
One hour after i posted my thread here i spotted that add through pure luck!
I wrote the seller and he was really surprised.
He was offering that sheet for almost two years now and a few month ago it was trashed by the cleaners!
That hurts so much!
But to be positive - a member from another forum send me a downloaded picture of the original auction and now i have all the data from my original build sheet.
Thats at least the second best thing that could happen.

And I was told that my factory seats are installed in a green Charger now that was sold to Europe. Maybe i can track it - chances are good that its in Germany now.