1976 HighSieria 35 utility bed removal, any ideas on a replacement?

[57NAPCO]

I have owned this truck for some time now, bought it from a board member as a no rust excellent roller (no engine/transmission) years ago. It now has a 22,000 mile 454 in it with a turbo 400 trans.
I no longer use the utility for my tools or work so I’m thinking about removing the bed and doing something else. Just not sure about “something else” so I’m looking for ideas. I’m not sure if there is a period correct dually truck bed that would fit it? Maybe a Aluminum flatbed? Custom hippie camper?

Thanks for any ideas, comments or ideas...