The mounting ears might be the same? Can't really tell. The hot post is in a different location, and the 3.4 pulley might be bigger. How far are you from home? I once drove almost an hour with a thrown alternator belt, can you charge or replace the battery and make it home?
Haha I was about to write just hit it with a hammer when I saw your last post. That's what I do with mine when it starts acting up. Glad you got it running.
skip the alternator. Just have him bring you a new battery. It should get you about an hour worth of driving before it dies. if you're only 45 min from home it will get you there and you can fix it properly.