Originally Posted by M.Bonanni

I have the Carbonetic LSD in my car and LOVE it. Not only is it one of the best performing diffs I have ever driven on the track, but it is also one of the most streetable diffs I have ever driven. Just as streetable as stock. The only catch is you HAVE to use Carbonetic diff oil since its a special formula made for the carbon discs. If you don't, it will be loud and might wear differently. I have also heard the OS Giken diffs are awesome as well and will be driving a car equipped with one here in a few weeks, although not a 370Z. Long story short, Carbonetic right now is my all-time favorite diff that I have tried, and I have tried a bunch in various different cars.