OK, I'm a philistine, I know, but Bob .... WHY??? Why do a 're-creation' when you could - especially with your skills - do an authentic 'restoration' of something interesting that will stand the test of the time and effort you put into it? There are plenty of possibilities: C60X No.4 Breakdown, F60L Recuperator, fully fitted out F15A Battery Staff (there are NONE of those around!), an RAAF C60L Gantry, C60S RDF, etc etc.....
But hey, they are your bits and your time, so you do whatever you like with them.
On that note, I'm off over the pond to Beltring .....
Mike C