single vs double wall top

[Bentblazer]

In the back ground is what I used to store my double wall, poles were wide enough to back into with the front 4x4 removed, then I would get into the bed and use my back against the top and lift enough to walk back and set rear end of top onto back 4x4 then set front 4x4 on bed rails and slide onto bolts in poles, kinda looked like a monkey screwing a elephant but it worked http://67-72chevytrucks.com/vboard/a...0&d=1312287356