Do you have a tow bar box that will tilt far enough to allow me to open a vertical tailgate on a van?

We have a range of tow bar boxes that will tilt to allow the tailgate on a car to open (e.g. hatchback, saloon, estate, SUV), e.g. the Cruz Tailo with the Apex box, The Thule VeloSpace XT with the BackSpace XT and the TowBox V3. Unfortunately, none of these systems tilt far enough to allow the vertical tailgate on a van to fully open.