|Mocked-up Proto 2000 52' Greenville gondola over DT&I prototype photo over HO scale ruler|
As I did not attend Prototype Rails in 2010, but still have this car on my to-do list, I had thought about it several times. My line of thinking evolved to a direction where I surmised that since Greenville built the DT&I gons and Greenville co-developed the 52' gon, then maybe there were similarities. There were enough, including the ease of modifying the Proto 2000 gon, that I settled on the Proto 2000 route and created the crude graphic shown above as a way to guide my efforts. Note that this doesn't account for any perspective issues with the prototype photo. However, by removing the middle section and a little from the end panels, a close model can be created.
I won't be tackling this anytime soon, but thought the graphic might help others while the debate about tastes great and less filling rages in other quarters. Good luck with your effort!