Thats what I did. its only 15A but it does make a difference. The hardest part was getting the thing out of the stupidly designed Saab. I ended up punching a hole in the Saab's firewall for the pulley to clear it.

Most any 900 (turbo or not) will have an 80A unit, they are very common around here. I searched/watched for months for a 120A unit and I still have never come across one.