Cargo Van or Pickup Truck with SpaceKap service bodies?

Traditionally our installation and service vehicles were cargo van (Chevrolet Cargo Vans or Econoline). They have been using SpaceKap service bodies for 15 Years and when they removed the SpaceKap from the pick-up truck they got 20% more than what they were expecting when returning the old truck.  The SpaceKap, in reality, had been protecting the truck bed the entire time.