Honestly I don't know other than they are both 10 bolt heads. Here are a few links to sites that say they will, you may want to ask them over there?
Saab doch head? - Turbobricks Forums
From what I can find it may work, but the general feeling is it wouldn't be any gain? I am just reposting what I have read, because I honestly don't know. I do know you can get big power out of a 2.3 Ford if you don't mind throwing some money at it. We ran one for a few years at a local dirt track and it held up turning 9400 in the straights for 2 years before we started running a late model.