I converted the Roundhouse 2-8-0 into a VR V Class, the last members of which were just hanging on into Glenburn's era. I walked through the conversion process in the VR Enthusiast Forum. If you want to know more on how it went and the changes made it can be found here:
Nb. You don't need to be a member of VRE to read this, but will need to join if you want to comment.
I have taken some pictures of the V in service on the "Latest Updates" page:
Here's an overview of the changes made in comparison with the original RTR model.