best replacement window motors?
Interesting. I had not heard that before.
Here is a pic of them;

The Best V8 Stories One Small Block at Time
The Dorman motors are fully sealed and the only penetration of the case is where the main rod and gear come out of the case. The OEM design has several other points where rivets go in to the case and bearings are pressed in. Supposedly, that lets in dirt and leads to faster wear.










