Regarding parking pennants..
Even Japan never made them for the W116, but other chassis-type pennants were often converted to fit, both with DIY brackets and by drilling holes in painful places
So, I am buying every old parking pennant available online in Japan, for W126, W107, and will have them re-chromed here in Taiwan.
We will match different types and lengths (there are at least 3-4 types!), and we will have slip-on brackets made here, and chromed.
There are even pennants that light up at night, and modern types, but we will stay away from those.
When we're done, I'll post photos and supply the Org.
In the meantime, here are some pics of different types.