I have been toying with this concept for several years in a typical "armchair enthusiast" sort of way and would really like some more knowledgeable input to put my mind at rest ! Very recently someone mentioned this in passing and helpfully added that the Dukedog was originally Bulldog number 3427 . Would it be a major exercise to "restore" this locomotive with a borrowed Standard 2 boiler ? If this is at all feasible I have in mind perhaps using the so-far unrestored boiler from say 5668 for 10 years before recertifying it again and handing it back to the owner . During the latter part of the Bulldog's certificate the Dukedog boiler might be overhauled to return it to a Dukedog . I am sure the engineering is not that simple but the thought occurs to me that the Bluebell might find it useful to have a Bulldog ( with a little more T.E and adhesive weight ) over its extended line . It's just that this would not be a new build , it would be a genuine Bulldog , something I have never seen. Did 3427 have a name ? If not , what should it be called ? Any help would be appreciated.