the atb diff is an awesome bit of kit a friend of mine was running one in a s2 with very high power could nail it in third with very little torque steer or wheel spinnig. but 300bhp 1st and 2nd gear its going to be a handfull in a front wheel drive car. the thing is with the quaife is that if any cv joints go you loose all drive not like the gripper diff which will still drive i belive