i was wonder what kinda L.S.Ds are you guys using. I am in the market to get one but still unsure what brand to get. Most likely a 2-way type. My 7 would mostly be circuit/autocross and drifting. The car is also a bit of a DD :P
Thinking about the Cusco RS 2 way or a ATS 2-way carbon.

What do you guys think ?

 

For circuit and autocross a Torsen is probably best, you can use the ones from the 1.8 Miatas in the NA housing, or the one from the FD in the TII housing. For Drifting, a rebuilt S4 LSD with the Mazdaspeed parts should be good and wil lalso work well for circuit and autocross. Drifters tend to like really, really stiff diffs that lock very aggressively. That's fine for drifting, but it'll make track use and autocross harder.

 

I do not think that a torsen would last the abuse of drifting :P clutch-kicking and such. So may be a good compromise would be a 1.5 way ?