CWR are showing a new 3D diesel loco body to fit the Kato bogie chassis on their website.
Yes, it is an extended version of the Growler called, surprisingly, the Growler 2. I received an early version and have done a quick paint job. It uses the Kato shorty chassis. There is a massive amount of space within for lead, radio control or whatever.
Looks good! I've just bought two CWR kits and have to say they are excellent, also the service from Chris is second to none. For the record it's the Dutch tram and Fairlie which I have bought.
There are in actual fact three Growlers available from CWR. The original version featured three side grills, a later slightly longer version had four side grills and both utilised the Kato four wheel chassis. The version illustrated by Jim is the latest and is designed for the kato bogie chassis and has I suspect been designed with radio control in mind.
Yes, you are right that there have now been three versions.
This one can cope with RC and also decoders and I am sure you could ask for lights front and back as well. I used the space for some serious lead weighting so that it can pull a reasonable train. The problem with the shorty chassis is that only two out of four xles are powered so it is actually no better than the 103.