What is the "correct" W.S. 19 to install in a Mk. II U.C. ?

[c. ladouceur (RIP)]

I have had the opportunity of obtaining a "mint" American made W.S. 19 Mk.II,(RCA-1942),and would like to install it in my Mk. II U.C.,(1944).It is in much better condition than any of my Canadian built Mk.II's or Mk.III's. Can anyone tell me if this would be a kosher installation or not. I've been told that the U.S. built these radios for Canadian use.