Well the power rack needs to have the bracket for the relay lever. As yours is probably a RHD I think the rods are different than what we have over here in the states.
I was under the impression that the relay levers were the same across the models that is 4spd or 5spd.
Try locating it in the etka.
https://volkswagen.7zap.com/en/rdw/golf+cabriolet/goc/1989-44/4/422-105000/