I have been looking and looking myself. I found some armrests off of a late eighties Audi A6 in the junkyard which were mounted on what looked like Recaros...I took the drivers off and will see if I can make work. Those armrests that I have seen on the new Recaros which are the same style as that in our G look the same as what I grabbed off the Audi. I will post my results in about 45 days when I get to that part of my project. PM me if you would like a photo of the armrest.
MIKE