Whereabouts are you? I've got a homemade Westy copy in the garage. It's pretty good quality and the dimensions are correct. Your welcome to borrow / use it.
I had a Devon one, can't remember who I gave it too, but someone of here. It was on a thread, it wasn't usable so they may still have it
I have a westy berlin lh drive locker. I'm in Boston hour and a half away. You can borrow it if you want, if you're rh drive I suppose you would have to reverse it (if you see what I mean)
Hey buddy that was me. We still have it. We have been away in the van every weekend lately so still havnt done it. Will be def soon as its on my mind to.
Theres some plans here...... http://www.devonmoonraker.pwp.blueyonder.co.uk/bay/1978_Moonraker_Plans.pdf
The handing is due to it being bolted through the rear cupboard which on my l hooker is on the left of the van. I just assumed that because of the sliding door the layout would have to be reversed, of course i could be wrong (and frequently are according to SWMBO)
The top locker can be 'stand alone' unit which doesn't have to have a cupboard beneath it. How it is actually supported I really don't know. I've seen many different ones. My current van has the Moonraker interior and those plans illustrate it http://www.devonmoonraker.pwp.blueyonder.co.uk/bay/1978_Moonraker_Plans.pdf My previous van had just the toplocker but was like a fronted box and either side was space for speakers. You often see them for sale second hand at shows etc if you wanted to copy a particular style. The ones I liked best were in my dads 1971 Sunlander - it was two separate lockers.
As viewed inside the van: Inside towards nearside: Inside towards offside: Near side support: Cupboard in load area which supports offside: & At the rear it is screwed into the bodywork all the way across. Pete
Afraid not but if you have a look at this: http://www.devonmoonraker.pwp.blueyonder.co.uk/bay/1971_Brochure.pdf you get the idea from the front - a base would be the same and a central partition added I presume? Glad the pics help