Well Rob, in my opinion the Revell Snowberry model started out as a Matchbox toy, and Revell just hasn't got around to re-tooling. And they probably won't because modelers are still snapping up the kits so why go the expense? Sure I'd love to see it and other kits as well redone, but I'm not holding my breath.
The lack of detail in that model is one reason I decided to go my own way with my Chicoutimi.
Now on to some of your other questions:
I am rather poor electronically, and do not have a scanner, so I can't copy the photo you want. Frankly I think by the time it gets scanned, Emailed, and printed it will lose a lot of the detail you are looking for as it is not a great shot to begin with.
Now, after saying that I'll try at work next week ...
The book should be available from Chapters. Try them on line.
Another resource you might try is the Maritime Museum of the Great Lakes (Kingston). They can be contacted through their web site. I have visited them a few times for my Chicoutimi research and they are most helpful.
Morden would have been repainted during her January '44 refit, so that accounts for the difference in colour schemes.
The bandstand for the 40mm was never moved. Canadian corvettes always had theirs at the after end of the engine room casing except for 10 which were built to RN pattern for the Royal Navy. These 10 also had round sterns, shorter casings, and no provision for minesweeping gear. Snowberry was one of these 10, even though she was manned by the RCN, that accounts for the difference there.
The number of engine room skylights may also be an RN pattern difference, or four lights per side may have been the practice at Port Arthur Shipbuilding, who built Morden. There was a war on and in the haste, remember Canada's shipbuilding industry was disorganized at the time, yards were given a lot of discretion in which types of fittings were installed, if they did not have the Admiralty patterns specified.
The bridge was extended and the Asdic hut added during the January '44 refit. The 271 radar was apparently added at this time as well, considering your earlier picture.
When you mention the early type radar, are you referring to the Canadian SW2C? This looks like a TV antenna and was usually carried at the masthead. Some corvettes kept it even after the 271 was added as it was a decent air search set. My photo of Morden is not clear as to if this antenna is still carried after the refit.
Good luck with your build, it is always nice to see other ships besides Snowberry.
Bruce