Hi,

Yes you can convert to disc brakes on this model, however it will require a decent amount of parts. Because of this it is best to have a donor vehicle available to take parts from, as replacing all the parts with new would be extremely expensive.
In addition to the brake rotors, calipers and pads, you will also need the following parts:

Backing plates
Parking brake shoes
Parking brake cables
All parking brake springs/mounting hardware
Tube and brake hoses to calipers
Rear hubs

All of these parts are direct swaps, there is nothing 'special' needed to make any of it fit. The parking brake cables are a bit different at the brake between drum and disc models where you may be able to adapt them to work... best to replace with the proper parts though and make it a direct fit.

Be aware that if you have an ABS equipped model this can cause issues with the braking in adverse conditions, as the ABS ecu is designed to expect a certain amount of brake action from the brake system that was originally installed and it can react unusually when you change the brake system effectiveness.
Otherwise, no big deal, just swap all applicable parts and you are good to go.

If you have any questions please just let me know.