Ford Zephyr Mk 3 4 speed gearbox built into close ratio box by Needam's in melb years ago ,it is unused spare box so like new insde as shown.Built for group nb appendix j zephyr mk 3.Could suit Mustang 6 cylinder or fast road/rally zephyr mk 1,2 or 3. 1st gear 30 teeth, 2nd 27,3rd 26,4th 23 2nd motion shaft 18,23,26.