Originally Posted by phunk

Well.. let me also just state that I have not personally seen failure introduced by use of one of the differential braces. So, the practice sucks on paper, but in the real world I have not seen it cause any real consequences yet. So I dont want to sound an alarm that everyone immediately run to remove these.

If it were to eventually cause a problem... what would it be? Well, most likely mounting point failure. Whether it became cracks at the crossmember, threads torn from the differential or cracking of the differential housing or cover. Is it possible that there could be some internal wear caused by housing distortion when the differential is loaded with only 1 solid mounting point? Eh, maybe, but its a pretty beefy unit and you know its shape is round/arch which is inherently rigid, etc. I would probably be in more of a hurry to get rid of it in a 350z since they have the aluminum rear crossmember rather than the beefy steel unit the 370z has.

So if you are enjoying it or the benefits from it, I would say to keep it in and maybe just plan to one day put in a full set of solid urethane bushings. If someone doesnt already have the brace, that is where I would attempt to intercept the plan and encourage a full bushing swap instead.