Selling my Quaife ATB (automatic torque biasing) differential, which fits all F23 gearboxes. This one has the correct RWD ramp angles for a VX220.
Being a gear based diff it will cope with high torque without requiring any maintenance, i.e. is a fit and forget part.
This thing allows you to put the power down earlier in corners and helps compensate for bumps/ripples in the road when one wheel loses traction momentarily.