Would it work, probably. Would it work well, no it won't. Disc brakes use higher hydraulic pressure than drum brakes, so you will really want to match your actuator to the system you're using. For drum brakes, use # DX97FR which I've linked below for you. www.etrailer.com/Accessories-and-Parts/Dexter/DX97FR.html
Master Lock makes a locking kit. One lock for the hitch pin and one gor your hitch receiver
Would that model work with the drum brakes as well?
Would it work, probably. Would it work well, no it won't. Disc brakes use higher hydraulic pressure than drum brakes, so you will really want to match your actuator to the system you're using. For drum brakes, use # DX97FR which I've linked below for you.
www.etrailer.com/Accessories-and-Parts/Dexter/DX97FR.html
Tell me how you can lock this up on your truck when you come back make sure it's still on your truck