it might be me being daft, dont know too much about transmissions but....i thought when the car is lifted off the floor, and one wheel is turned,a normal diff would allow the opposite wheel turn in the opposite direction, but on my standard
ibiza by turning one wheel, both turned at the same time! and with my IHI
cupra and standard box it certainly handles the power quite well, only in a straight line in the dry may i add!