http://www.nissanraceshop.com/produc...FeU-Mgod6g8ANg

 

The overflow should be going into the subframe, and if that were leaking it would be the differential fluid.

I went with the Whiteline bushings for the diff, you may be able to purchase seperately but I thing most companies sell them as sets. Either way its not very expensive, far less than what a stealership would want. I never replaced the main bushing personally but I've heard its a PITA. See if there's any local shops that know how to replace it.

 

^ thanks for all the support, I found some useful YouTube videos.

 

There is a great DIY thread on my350z.com also:

http://my350z.com/forum/engine-drive...mp-either.html

 

If you haven't figured out what your looking at yet, this may help. This is the back of the diff still mounted in the subframe. You can see the hose on top and where it goes. Obviously the bushing is the round piece.