Anders,
i asked this question for some guys I know. they organize official
driftdays and trackdays in Holland, germany and Belgium.
Now they asked me (with my sweden expierence...

been there a lot of times. got allready 8 years a swedisch girlfriend.. drove some big km´s in all kind of weather over there... also some frozen lakes..)
so they checked out allready some companies like: John Haugland in Norway, vatannen in Finland, further Prodrive, 333events etc..
But there should also be some swedisch options..
Just need some adresses I can pass through
The guys I talk about are not some "beginners"... so they take it seriously..(it allready a long drive from Holland for just an event)
Cars: Evo´s, M3´s...etc
And maybe it´s not even a bad thing that they combine it with some local clubs.
greetings,
david