The rebuilt engine still retained its additional axle, resulting in a more spacious cab for the driver and fireman. The tender was not rebuilt, but was modified slightly at the front so that the ends of the curved side sheets now finished  apart; it was also given streamlined plating at the top (which was removed again in January 1938) and a longer coal chute.
The rebuilt engine retained its supplementary axle, leading to an increased interior space for the driver and fireman. The tender was not overhauled but underwent some adjustments at the front; it also received new streamlined panels on top (which were later removed in January 1938) and a longer coal chute.