it's not locking (from quaife)
it has to be crazy drive cupra with this power , you have to post some video!!!
Ι post video when finish with clutch and differential
if you will get the differential, please write something about it, I am very interested to get quaife too
DSG Version here:
http://www.quaife.co.uk/VW-DSG-ATB-diff
How much to get it fitted? How difficult to DIY?