...I'm guessing custom only now.... would require a good used set to use as a pattern to replicate new
Perhaps reshape the available front ones available at...
http://www.worlduph.com/mercedes_benz/w116/
There's a good chance I'll be back in a W116 this year.... a '79 SD...
I guess you recently re-checked UPH and GAHH, to see whether they have them again -or not? I understand they come and go over the years..
Got mine from Romenia, from MAFF.ro mercedes. Have not re-checked there in 2 years myself.