final drive raios for Micra K10

I am here researching gearbox ratios for either the 4 or 5 speed K10 gearbox, even looking at the K11 early box ratios, what I really need to know is can the 4.2:1 ratio differential fit the Boxy Micra casing?.
Has anyone ever fitted a final drive from another manufacturer ( even another model Nissan ratio) into the Micra box?.OK I know I am all questions.any help or links greatly recieved .
 
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