Lovely job Dave.
You seem to have all the detail spot on as far as I can see so you must have some decent reference material.
Do you have the book "Conqueror" by "Rob Griffin" ? As that has a whole chapter on the gas turbine Conqueror.
There's also a Tankograd book with some decent photos but it doesn't look like you need any picture references.
The new Mk2 kit that's not been out long does have the splash guards so anyone wanting to model the Mk1 would be better off buying the Mk2 kit as it has all the MK1 bits plus a few Mk2 bits.
Still seems like a better kit than the Dragon effort a bit finer, workable track and much cheaper.
The boxes as you say are diabolical.
Currently building a Mk1 but it looks like the kit is mostly Mk1 but with the Mk2 boxes though even for the Mk2 they're wrong.
John.