Are you sure about this being a waste of time, disc brake on the rear. My hx panel van had disc brake (wb disc brake diff) fitted on way before I purchase the van. To be honest, best set of brake, good braking control and pull up very quickly. Better brakes than my hz ute (which has rear drums) and also the LE coupe I own (rear drum brake also). HZ GTS I have also (rear disc brake - which was standard), very good braking and control. Personally, I would think the panel van would have enough weigh over or at the rear end and wind factor (van are not the most aerodynamic cars) that rear disc brake would work very well. Let say, fitting rear disc brake to a ute, lite in the rear end and more aerodynamic, the weigh transfer you are talking about, I can understand and agree that rear disc brake could be a waste of time. All I can say personally, disc brake work very well on my panel van and I have decided to leave them on.