Remember; a valve of this type only limits rear pressure down from the input pressure (and it varies due to that input pressure) so it will not 'increase' rear pressure in any way. Reduction tops out at about 57%.

More rear brake is nice, but like anything, too much of a good thing might be bad.

Considerations on plumbing and abs may also be required.

Any pics of the inside on the rotor side with the bracket on.

Thread dates, people....look at them.

Did negative on the search unless you know some secret database.... In see pics of the front rotors not on the back side.