Kube is correct. The TRICO Wiper Spec Sheet I have says that SSM-27 is the TRICO number for the 1940 Ford closed car wiper motor. SSM-32-1 is shown to be a service number for that motor. To get the best , correct answer call Ficken Wiper Service. They rebuilt my 1940 wiper motor many years ago and are the noted experts in the field. Hope pictures help.thhttp://www.wiperman.com/ I think the founder Dave Ficken passed away, but his son does a great job.