Although OP hasn't responded, I want to give a first tip when deploying a DVRS because I see this mistake WAYYY too often. Get someone who really understands RF to help with the install.... do not just give it to a shop and say "here install this". What a shop without experience will typically do if you are doing DVRS in band is just pick some random location for both antennas. Although the in-band DVRS comes with an incredibly efficient, yet incredibly expensive notch filter, you are still going to want as much physical antenna separation as possible. The most recent one I saw, the customer was using two "Mirage" antennas that were maybe a foot apart for the MSU and the DVRS. Not a time to use mirage antennas if at all it can be avoided (heck isn't the point of this device because you have fringe coverage anyway?) and this was a large vehicle where they should be physically separated as much as possible. I have also seen folks go as far as to mount the DVRS antennas with the plane 90 degrees off of the MSU to utilize the polarization as a filter.
Careful deployment will net really impressive results of the DVRS, which is what you will need when you need it most.