absolutely you can use a dual potentiometer for this, pick one with a linear (aka B) taper and the same resistance.


but you can probably modify them by interconnecting them so that the second unit acts as the opposite of the first.

Here blue lines are wires (you'll need to scrape away some of the green to solder to the copper under it)  and the red lines are cuts you'll need to make in the copper of the second board.

also connect the power and ground on both units.
[![enter image description here][1]][1]


  [1]: https://i.sstatic.net/buWsw.png