Originally Posted by
Jr_SS
Omar, the 350z and pathfinder/xterra all use the R200 diff. You wont have to swap diff housings, only ring and pinions to get the gearing you want.
hopefully you are right ,the 350z is much bigger than the q45 diff ,is a good inch taller .i tried to swap the diff covers and even though they look the same is about and inch off. hopefully the xterra is the same dimensions as the 350z. internally the pinion and ring are massive compared to the q45