I just fitted 2012 Spanish leather Pathfinder front seats into my 2013 Spanish D40 Dual Cab.
They swapped in perfectly, bolts and space wise are identical. With one small exception being the single black cable for the passengers seat side airbag. It's a slightly different plug. However a quick...
Very unlikely to be the drive shaft unless it's been removed and installed upside down. Don't laugh, had this happen in my classic 2000 Datsun Roadster back in the 90's. Took me 2 months to work out the problem darn it.
If you really love her, get her a D40, failing that 'cause you already got one, an original short wheel base series 1 (1948-1954) Landrover, she'll love you forever!