Had one long ago, I think it was a '79. First off, if you are going to hotwire it after the key mechanism breaks, pay attention and do not leave the starter hot lead twisted into the bundle or else you will smell something funny in a few miles...Which leads to: Changing starters on a 900T is a bitch! I cheated by not removing pretty much the entire exhaust like the book says, once loose it took me about an hour to figure out how to get the starter out of the hole I had to work with. This is of course after I drove it for two months as a daily driver with no starter. I love manual trannies!
Mine was a hoot, one of my first cars and it got bombed down a bunch of gravel roads at night at high speed. When it came to me the fuel metering system had been replaced by a manual valve under the hood. This, coupled with a turbo that had a not so functional wastegate made it go pretty good. Later the oil seals in the turbo started to go from all this abuse, my advice is to keep the revs up to maintain exhaust back pressure. I drove it like that for about 6 months, if it dropped to idle a military smokescreen would ensue. Used that intentionally a couple of times.
A lesson from long before I owned it. My dad was going to show me all about handbrake turns. (This from a man that would loop his VW rabbit every time he came in the driveway, same guy that bet he could 360 a company 1/2ton chevy in a two rut driveway. He got 270 before the big flip...) Anyway, so there we are, snow cover backroads, T intersection, high rate of speed. Did you know Saab puts the handbrake on the front wheels? Neither did my dad....
Oh well, no useful knowledge, just good memories.