Door locks are not that complex at all.
You will need `door actuators` (1 per door) a 2 way switch and a few SPDT relays.
The actuators are mounted static so they dont move at all...the rod is attached to the same rod that you pull to unlock the door manually. You will have to play with it/test it to make sure its not in a bind and locking/unlocking clean.
Wiring is not too bad either, just depends on how you want the switch/switches to work. Each actuator has 2 wires (pos and neg) run them all from each door to the same location ( under the dash on the drivers side would be ideal, so you can use the ignition harness for power).
After that, its all about how you want the switches to work.