No clue. The rs6f94r would be good to look at especially if the guts fit inside our 5f91r casing.
This is still new unventured territory. Heck, there could still be differences internally that make the japes rs5f91r different from ours. It's unlikely from a manufacturing stand point but it happens.
If you have a good relationship with your source and you can discover and return if unable to use I say go for it. Torsen / helix / gear type lsd are built to last. So a used one is solid. Clutch types are rebuildable but not generally OEM. This could be a cheap option.
The one reason I would think not, is versa speed. They throughly research stuff, if they could use a jukes lsd from a local scrap yard they wouldn't try to sell you on a Renault LSD from UK.
View my fuel log 2015 Micra S manual: 7.7 L/100 km ... 36.8 mpg (Imp) ... 13.0 km/L ... 30.6 mpg (US) ...