Hi - by "new bogey" do you mean one regauged to the correct 3'6"? I have done this to the original Auran bogey and have made improvements to the original Auran loco - it is now the correct size!, weathered, sparks and has Numberit, maker's plates and choice of half or full pantos. I haven't reskinned it yet so it is still in the original blue (or red) SAR livery.
Richard