Hi Jared, the factory stopped supplying parts for these a few years ago so the closure has no bearing on it, still plenty of Tractors out there to scavenge parts from. Plenty of people restore the very early Tractors and they are much harder to find bits for and with you being in QLD that is where the majority of Greenfields seem to be. I would say prd is going to be able to help you more than I can because I don't have a tractor to reference all the bits you have disassembled there. It is probably worth your while to hunt down another Tractor so you can see where all the bits go and then you also have a pile of parts you can use if needed.