it all depends on what power your running,
if your staying below 400 id stick with the std diff,
if goin over 400 supra diff all the way,
your grippers,quaife etc will still break
I fitted one of them weir performance kits to my supra diff and it locks every time without fail
the weir kit only costs £40/£50
the car is also far better at putting the power down with it
imo it has to be the best mod for the money ,
fit and forget, well so far anyway lol
id like to hear some feedback from someone putting a lot of bhp through one