In September 1946 the Chief General Staff asked the Chief Technical Staff to further investigate the feasibility of Dutch armoured car production. In October the General Staff reported to the ministry of war that over the years 1947 to 1948 the Army needed to add about two hundred armoured cars to its strength whereas most of the 125 armoured cars remaining in dumps were generally only useful for cannibalisation. Meanwhile DAF had indicated to be able to produce the required number at a rate of ten vehicles per month, manufacture starting one year after the order had been received. In December the minister of defence answered that in principle he could agree with a production by DAF but that the costs of the project had first to be established and that also Belgium had to be contacted to inquire whether that nation would be interested in a cooperative production of the type. Accordingly in January 1947 a special commission was formed, the "Commissie Bestudering Van Doorne-Pantserwagens", to study the cost aspects. This commission soon began to consider the option to procure light tanks instead of armoured cars. In February Wim van Doorne personally approached the minister of war to emphasise the willingness of DAF to produce the DAF M39 or, if necessary, to develop light or medium tanks. In May the commission concluded that there indeed was a need for two hundred new armoured cars, namely 154 vehicles to equip six squadrons and two reconnaissance regiments in the Dutch Indies together with 46 vehicles for training purposes. At the same time a list of specifications was established, most of them conforming in detail with the known qualities of the 6x6 DAF M40, including the 37 mm gun, though instead of the Bofors some British or American cannon already in use had to be fitted. Lieutenant-Colonel Piet van der Trappen and Major P. Scheper would make a study trip to the Indies to investigate the local conditions to prepare a tropicalised version. DAF calculated the total costs to produce two hundred units at 27.6 million guilders.