I have a 05 G35 Coupe AT with the LSD diff. My diff failed and it stutters at low speeds/after hitting bumpy roads. Found a diff out of a 08 350z enthusiast edition at a local junkyard. It should be a straight swap right? I know up to 07 are straight swaps, not too sure about 08+.

Something you may want to consider.

https://www.z1motorsports.com/upload...GearRatios.pdf

The diff is a straight bolt-on swap though yes.

They should all be the same from 03-08.

Thanks guys, thought the HR would have any effect but looks like it doesn't.

They're all the same housing but as you can see from that link I posted the ratio is different.