Two Ram models, but radically different on almost all aspects. First of all, although one is a Pickup and the other a Van, both have similarly sized ground shadow. Also, there is a notable difference in the starting price of the 2017 1500 Quad Cab, which is $3,750 less than the base MSRP of the 2017 Promaster Window Van. In addition, the Promaster Window Van produces fewer horsepower than the 1500 Quad Cab. And finally, the Ram 1500 Quad Cab seats four more passengers than the Ram Promaster Window Van. Among similarities is the ground shadow size.