Yank 34 is a different chassis to the Blackwood one.
Yank 34 was part of a batch built by Moores - the others in the same batch included Kersbrook, Kangarilla, Echunga, Mallala, Jervois, Browns Well, Freeling, Kingscote, McLaen Flat, Moorak, Moorook, Mount Graham, Yahl, One Tree Hill and more...
Although the I recall that the design did change as the build went ahead....
Pip