So finally after having the euro license filler for 4 years, I installed it. Received the new screws and plugs. I also had the adhesive tape which is not double sided like everyone thinks. It is actually a trim tape to cover the paint of the car, for example where the holes are for the euro license plug or another hole at the top by the lights. I ended up not using it.

I started by removing license and old white plugs.
Then washing area. Added painters blue tap on the inside to keep car dry on the inside. Worked like a charm.

I wanted to reuse the original mounting holes to prevent new holes and any possible leaks. I used new black plugs as they are more slim. I heard in another post this would work and keep the trim flush to the car. I can confirm this is true with some modification of the panel. The BMW part is available still in white but the new slim black version is available and even cheaper.
Here is a pic of the white plug. I didnt take a pic of the black plug but its way thinner.

Black plugs installed:

Trim held up with blue tape and centered to draw holes from inside the trunk.

In order to use the black plug at the bottom, I had to trim the ridge on the back side of the trim panel with my dremel. Very easy and thats it. The top black plugs fit just fine.

I then use a small strip of exterior double sided tape on the ends where the ridge line is. This adds a little more cushion on the sides but with the license place one and screwed in with 4 plus, the panel is held on very tight.
Here is the finish product but it was night. I will try to take a day pic tomorrow.
