Currently the only Limited Slip Differential that I am aware of being widely available for our car is the Kleeman. It is 60% locking and is ~ $2,300 + install. Personally I am not a huge fan of the Kleeman design. There are some efforts underway to get Quaife to make an LSD that will fit. If you are not familiar with their product it is fantastic (I have used it in other applications). It is "Torque Sensing" and offers from 0-100% lockup. It is not quite as aggressive as a clutch style LSD but does not require special fluid and there are no disks to wear out.

Price will depend on level of interest but a rough range is $1,100 - $2,500. Quaife will only produce if they feel the interest level is high enough. If you are seriously interested please post here.

 

is this just a l. s. diff or different gear ratio also?

 

Just the limited slip.

 

Darn, I think it needs gears more than the lsd.
Thanks for the info.