The W&T "garden shed" cab is not present on the etches I have, which are untouched. It wasn't my intention to build the W&T variant, as it happens.
The rivetted smokebox would be very helpful.
In respect of the two types of chassis, the brass one does look friendlier towards CSB suspension, but I can only determine this once I have the later n/s version to compare it with. I will be using my usual coreless motor (RG4) to power it; can't stand worm gears.
Here is the castings pack, applicable to the original "E":
Note the tall chimney that seems to go on forever, and the unusual "Y"-strapping on the original smokebox door.
It is said that Martin Atock was as much an artist as he was a locomotive designer, giving not much time to the styling conventions of the day. Had he lived in a later era and worked in the car industry, I like to think he would have fitted in very well at Citroen prior to the PSA takeover.