As part of the stash of parts that I got when I bought the 914/6, I had several CV joints. It turns out that two are NOS Lobro 914/4 joints, still in the box and full of packing grease.
I also have 3 complete joints that appear to be 914/6 parts, and one non-complete one. bummer.
I can't find a part number, and I've never seen a 914/6 CV joint, so any help from those who have is welcome.
Outer diameter is 94 mm