Joe from Casula Hobbies sent me a few Pics of their upcoming RTR NSW PXC, Not sure if these have been seen elsewhere, but Joe said it's OK to post. Joe told me there is more details to be added (mainly brass etches etc), it looks to be a very nice model coming from them, and knowing the research team should be an accurate model. At the moment the models are due around the 2nd half of the year (2013) and will be sold as a 4 pack though I believe that Joe/Casula Hobbies may split the packs as they currently do for other models they sell.
I have no involvment with this model, nor Casula Hobbies other than as a satisfied customer & a friend.
Overall Photo - Brake Gear End
Close up of End