My 1973 Charger's power window motor

* on the passenger side has given out (the window goes up and down freely with the motor stopped, thought the motor still makes noise when pressed up or down); and
* on the driver's side is moving very, very slow in both directions.

For those who have done this before, what's best approach:

1. Rebuild the existing units with new nylon gears
2. Get a pair of the new motors (different shape, without the bracket at the end that bolts to the inner door panel or
3. get a rebuilt set from Cardone?

Anyone have a template for drilling holes in the inner door panel sheetmetal to get to the motors without having to remove the entire regulator assembly?

Thanks Moparts!