On my 3rd set of pads for my GenII Outlander at around 400 miles so I’m wanting to do something about it.

I’m going to go with some Race Driven pads and rotors, and have been thinking about adding another rear caliper to help with my back brakes.

I’m wondering if i would be able to use the factory rear master cylinder and just add the rear caliper to it on the same port as the factory one?
The Europeon Outlander and Renegade has the same part number rear master cylinder but the USA Outlander has a different part number.

I’m not interested in splitting the brake levers right now I just want to add the left rear caliper.

Can anyone shed some light? Thanks