David - Ede built a G scale model of the #2 heavy duty flat for me a few years back. He and I pretty much have the same files on the car although I did what measurements I could of the car when I dismantled it due to it being too far gone to move to the museum in its then current condition. We have eighteen West Side cars that have either been restored or waiting their turn. Currently we are restoring the WSLC snowplow that burned up in the Railroad Fire outside of Yosemite three years ago.
I see you are outside Melbourne. I was there last year on a cruise but its certain my wife would not let me go railroad museum hopping on this trip. My second cousin Bruin and his wife, both locals, ran us around Sydney for several days so we got some good insights and sights of your country.
If you want to see our restoration progress then you can look up the Nevada County Narrow Gauge Railroad museum on Facebook or our website. John