I had a set of these cupholders in the early 2000s on my 88 Carrera. thought they were so convenient that I bought them for my next car which was an 88 930.
Fast forward to this year and I have installed them on my 95 and my 98 993s. They are inexpensive and very functional. When you’re not using them, they fold up nice and snug to the Passengerside of the shifter hump. I used a couple of Self tapping screws. Installed In minutes. 😊 I will try to get a picture of the install on line tomorrow.