Transporting a box. - HELP!!!!

[KVB]

I have the possibility of getting a short stepside for my truck. The seller wants it gone asap. I have the time.

What i need to know, is if anybody has hauled home a box like this on the back of a U-haul rental pickup!

How did you sit it up there? How did you support it? Strap it down?

Any pictures?

How heavy is a box like this? wood is still the floor.

I need to get this figured quick, any help would be appreciated.

Thanks

Ken