Take a look at the M&G Engineering Brake System
. I installed it on my 2016 Georgetown XL 378 / Honda CR-V combination and could not be happier.
It is a very unique design that (a) gives truly proportional braking and (b) has nothing visible in the car. I don't see much written about them, and am surprised by that. The system is a bit more expensive but the design, engineering, construction and service is outstanding.
They are located in Athens, TX and since I live only about 200 miles away, I went to them to have the system installed. I also had the break-away option installed.