The one SOR sells is for a troopy not a pickup. Pickups are longer. In the past when my pickup was kept at our cabin outside I ran four 2X4s from the headache rack to the top of the tailgate. I then put a piece of plywood on that. Snow country so need to support between the 2X4s. Covered that with a large water proof tarp. Most fitted covers are not truly water proof. Plus on a pickup would need to figure a way to prevent sagging over the bed. Harbor Freight was selling their portable garages for under $200 on the their parking lot sale. That might be your easiest and cheapest option.