It's definitely wider - about three inches each side and I think shaped a little higher to match. BVR 8 has been coal fired for some time and remains so - it has always been a capable engine on coal. The modifications are expected to stop it shuttling the train now it has balanced flyweights, and it is expected to "breathe" more easily and efficiently with the improvements to valve gear and steam circuit. The big hope is that it will have more punch with a heavy train. BVR 7 after early improvements in 2002 went from a power output of around 35hp to around 80hp! It's hoped BVR 8 will touch 90hp.