Are you sure it's an aftermarket A/C system? It looks very like the 760 motor to me which is the same as the later 940 A/C fan but the 940 runs the opposite way and you need the fan blade from your original motor or it just makes a lot of noise without shift any air.
Try uploading your photos to postimages.org and then use the "Hotlink for forums" link to show the pics in your threads. Life is easier with a computer when using forums and wanting to show photos, that's for sure!
Does it look anything remotely similar to that?