Pick up side locker - New lock needed

[Rust&Rot]

Hello all
My pick up has always only had one side locker that opens on the key.
I would like to put new locks on both sides so I can access them easier and have one key for both.
However I'm unsure which barrel and key I would need to buy, are they the same as a tailgate?
Yours confused, Jon.

[Timburrows]

Just get a tumbler set and set it up the same as the ign switch