for some odd reason i think cusco made the trd diff cusco makes Little tad bit of noise like you mentioned but are still nice and tight and have dull finish to them
and there is many many different type of cusco unit's
but this is wild guess
the kazz's are very aggressive diff example if i am driving and lay off the throttle the back end will twitch and the supra is not light this will give yea an idea
kazz there is saying (if it maken funning noise it's working)
mine on the other hand is not really that loud compared to some ae86 and 240's i have drove
and there is many many different type of cusco unit's
but this is wild guess
the kazz's are very aggressive diff example if i am driving and lay off the throttle the back end will twitch and the supra is not light this will give yea an idea
kazz there is saying (if it maken funning noise it's working)
mine on the other hand is not really that loud compared to some ae86 and 240's i have drove
