An LSD. it don't stop there, To have a decent drifter you lower it a bit, stiffen the ass and make the front a bit soft other wise the car will over-correct coming out of the turn and go into a spin (everyone does remember the gold vk from last month out at qld raceway don't they) and if its not about power but all about torque why are people running atleast 500hp and not slappin in a diesel for torque? YOU NEED POWER TO GET THE ASS OUT AT HIGH SPEED, YOU can't JUST PUTT AROUND THE TRACK AND THEN GIVE IT SOME INTO THE CORNERS, the maximum torque for a car is between 2000 and 4500, when drifting you are revving at around 6500 rpm.