I've got a 65 Cutlass that I think needs a wiper motor, it ran super slow and only 1 speed worked. I went to the local parts store and they order one but it is totally different than the unit on this car. I have checked every where I can think of and they all list the wrong motor, my car has a round motor that hangs off the side of the mount and everyone list a motor the that's square and sticks straight out from the mount.
Can anyone shed any light on this subject or maybe know a rebuilder that works on these or maybe has a real good used one.

 

There were a few things that Olds changed in about that year. I'm not sure what your motor looks like but '64 has a round motor. Check the link for a pic.
http://www.cardone.com/English/club/...PARTNUM=40-112

 

That sure is what it looks like! I wonder if it's the same mine does have an odd looking adapter under it to make it fit the firewall.