The series III chassis was modified by moving the grille, radiator and first cross-member forward, deleting cross-member number two, making the cross-member under the gearbox removal, and cutting away the cross-member behind the transmission to clear the prop' shaft.
Axles are standard series III but with 3.54:1 differentials and with Range Rover style constant velocity joints in the steering swivels, on account of the constant four wheel drive.