AFV 432s are identical vehicles for personnel carriers, ambulance, and mortar carriers.The roof was designed in four parts in orwer that a mortar could be fired from within the vehicle. The only difference is that ambulances had a red cross on a white square on the roof and sides. All vehicles had their radio call sign painted on their sides in white. There would also be a variation in the amount and placing of radio antennas, Originally, they were petrol powered with the exhaust emerging from the engine cover, but about '67 these were replaced by a diesel powered model with the exhaust along the left hand side, Ferret scout cars came in three versions, mark 1 which had no turret at all, mark 1/2, with a fixed turret with a Bren gun mount, and the mark 3 with the rotating turret with a .30 cal Browning MG. This would fit your timescale, Later on the AFV 434 was introduced as a REME vehicle with a HIAB crane on the back in order to be able to replace the engine packs. Sadly, I cannot remember the roof hatch configuration. As a last note, by the time that you are interested in, flotation screens and front bouyancy tanks had been removed