Awesome update! I'm finding it difficult to find sources for some of these parts, and am looking forward to your further updates, hopefully with sources along with the part numbers.My front grill is due for delivery tomorrow. I may have answers and part numbers for ACC cars soon!
Here is a list of parts in this thread that have been ordered by myself and confirmed to work on my car. YMMV
Grill w/ ACC: 39028928
ACC bracket: 39079563
Chrome Wing R: 13491191
Chrome Wing L: 13491190
Black Grill Bezel: 39112551
Opel Grill Emblem: 13491204
Opel Tailgate Emblem: 39068586
Rear Bumper Exhaust Molding: 39117536
Rear Bumper OPC SideSkirt R: 39112659
Rear Bumper OPC Sideskirt L: 39112658
My source for most of these parts was BlitzParts in Germany. Please email Adrian at firstname.lastname@example.org
I have sets of Opel center caps available for $35 shipped.