the diameter of the rotors in this kit is larger; the swept pad area no greater , perhaps less. I didn't bother to measure. They fit a cobalt; will adapt to Saab but as pointed out the rotor centers will need machining to fit and wheel choice becomes an issue, 17 " saab wheels may be an issue.
My guess is, not worth the effort. This kit is a Camaro rear brake set up FYI