If you don't have any luck finding one pre-made, I'm happy to help you out with dimensions and depending on timing I may be able to help you knock one up. They're not hard to make and don't need to be super heavy duty for a bare shell. My Mk1 shell has been on my rotisserie for close to 8 years!!!
I'm just over the Westgate in Yarraville if you're keen to have a squizz.
cheers mate. Im still a bit away, actually still in Adelaide but in the next month or so I might take you up on the offer for a looksee. Of course it would be easier to borrow or steal an already built one but if I have to build looking close up and getting dimensions would be great.