The coupe quarter window rubbers are available from rare spares. My car was the first to get these rubbers, I had to give feedback to WA rep for rare spares.

They fit fairly well but have about a 1mm gap at the bottom of the glass. The rubber does touch the glass but it needs to be a bit higher.

This was not deemed to be an issue and they are now available

i bought my coupe ones from nissan approx 2yrs ago, Scotts / Spectrum rubber used to sell them as well, but nissan was cheaper at the time.