So you'll be looking for manuals and parts lists, then?
The Aust MG carrier is unique in many ways: little from an English carrier will fit or is appropriate anyway, so looks like you'll be making lots of new friends in Australia while seeking spares and fittings!!
There is also my book on the Aust LP carriers to be considered, if you want some history of the type.
Email me if you want a copy and I'll work out postage, etc,
Wonder how an Aussie cut-down carrier came to be in the USA?
Mike C