Anyone built a bed frame with 8020/t/v-slot aluminium

[mrak]

Why not just a couple of 4" thick memory foam slabs the width of the rear, lie them on top of each other to make a dense 8" thick bed and roll up then strap into a sausage roll affair x 2 for transport?

Could work.

Do you mean just on the entire floor? That for sure would be the easiest, but I want something which can go over the rear seats so I can keep them in the van. So some sort of frame which has legs in the rear seat foot wells, in the middle, and at the back of the van is what I'm thinking. And it should be pretty straightforward, but I'm not that great at this kind of stuff.