 Also available from February 1961 was the Perkins 4/99 diesel engine for those who chose economy before performance.As well as making the 12 seater bus, Martin Walter produced another version called the Farmer's Model Utilabrake, which had two front upholstered seats, but plainwood slatted seats arranged along the sides of the rear part of the body.For a little comfort pvc backrests were supplied for the longitudinal seats, unlike their other Work bus 12 seater, which was designed for rough usage and did not have this comfort for its occupants.