I found two Saab Sport seats earlier but they were in a bad shape (re-upholstered badly). A fellow Saab Club member Briitta promised to sew new covers for me. It took a while but the seats are finally done and I put them in the car already. Here’s some photos of the process and the outcome:
All in all I’m quite happy with the outcome and the Sport seats are much nicer to sit on than the basic models. Thanks to Briitta and Mikko for the work they put into the seats!