egyautoparts has a lot of hard to find stuff - I've bough many things from them
To be honest, the father/daughter team only had to use two times part no. 51 12 1 804 413, "Covering moulding" in BMW English. These "Abdeckblende(n)" are standard on all E3 except the USA versions - and very elegant indeed.This was a very nice rear bumper mod by the father / daughter team.
I like how they used a chrome strip to cover up the rear bumper joint - an area that would be covered by the "bumperettes" - very elegant.