I have an ifor truck man for my 90 ... ive mostly been using it to store firewood under in the garden. I fancy fitting it for the winter give me some covered space for stuff in the pick up.
Mine looks like this. It's an Ifor Williams... came with the Landy and I've not taken it off yet. The fittings look like they're welded to the canopy. The middle one's a spacer. Don't know if it's standard cause it's the only one I've ever had, but hope this helps.