Thanks to Thirsty for providing the images on where to put the power door/lock holes in the cab and doors:
This shows how the hole is centered between the hinges on the A pillar
![](http://www.73-87chevytrucks.com/techinfo/door_pwr/door_power1.jpg)
Close up of the dimples for the rivet holes on the A pillar spaced 2 5/8" apart
![](http://www.73-87chevytrucks.com/techinfo/door_pwr/door_power2.jpg)
Hole in the door centered between hinges
![](http://www.73-87chevytrucks.com/techinfo/door_pwr/door_power3.jpg)
Close up of the dimples for the rivet holes in the door spaced 2 5/8" apart same as the A pillar
![](http://www.73-87chevytrucks.com/techinfo/door_pwr/door_power4.jpg)
Boot that gets riveted on to both the door and the pillar
![](http://www.73-87chevytrucks.com/techinfo/door_pwr/door_power5.jpg)