Thanks for the comments.
Spare parts should not be a major issue, especially not Scandinavia where the 900's were quite common.
SAAB had some good spells, with their rally achievements and some quite successful models. The 99 was good, and some of the earlier models were wonderfully quirky.
The classic 900 as shown here was above much of the competition in the beginning of the 80's, in it's own ways it was a sophisticated car - to some extent even over-engineered. But the 900 was outdated by the time it had been tweaked and tuned to last into the early 90's.
And somehow the brand lost it's mojo when GM got involved, I think. Though some of the criticism may be unfair as the Americans did pour significant amounts of money into the brand to keep it alive. At least for a while.
Here shown from a 'SAAB'ish' angle