if u can find one...a TRD helical lsd.....works great, very easy to maintain and no noise..........basically feels like stock and acts like an lsd when u need it
but u have a lot of choices...i'm sure the others will give u some more options
Cusco mz is very good mine whines when your on the motorway but you get used to it and only clunks when turning corners slowly like most others do:rockon::rockon: