Originally Posted by 1slow370

Ok the housings are the same but the carriers are different. Also yes the stub flanges are different from vlsd- to base and 350z to 370z. The little taper where the splines stop and the flange seats against the carrier is different on 350z stub axle flanges. So you will need whichever flanges match your carrier (lsd, vlsd, open, and 350vs 370z) and then that will fit in any housing. If you want to run any gear larger than 3.569 you will need to make sure the carrier (and as such its matching flanges) is one of the manual versions. Forgot to mention the abs ring tooth count is one tooth different on the 350z flanges as well doesnt make a huge difference though.