⭕ R&D 6 speed straight cut dog engagement gearbox complete with very rare 50/50 torque split plated centre diff and handbrake release. The gearbox has only done 150 miles since its last rebuild and the centre diff has done 0 miles since rebuild, including a full set of new friction plates. 4.1:1 step of gears and chain included, 4.1:1 gives a better top speed while still giving amazing acceleration. Can be sent by courier at extra cost.