Selet New differential carrier

[RamAir]

So the rear end on my car needs a new differential carrier. Unfortunately there is a lot of different models to select between, TrueTrack, Posi, Detroit lock ....... What would be the best choice for a car that most are used on the streets. I think that I prefere that the rear end are as quiet as possible. Any sugestions, cos and pros.
Regards M:)

[UMI Tech]

We have a test car with an Eaton posi. It's nice and quiet and distributes power well.

It's not ultra sophisticated though, just a good basic unit.