the overall profile and architecture of the ca changed little during the vehicle's seventeen-year life. there were, however, three distinctly different versions sold. the first cas featured a two-piece windscreen, comprising two separate flat sheets of glass separated with a central vertical metal divide. as curved screen glass became available in the uk at an acceptable price, the two piece windscreen was replaced with a single slightly curved windscreen in approximately 1958. at the same time the painted front grille of the original, which had featured a central split reflecting the split windscreen, was replaced by a smaller unsplit front grille, still painted in the van's body colour. the third version of the bedford ca, sold from late 1964, featured a much deeper windscreen and side windows, and a corresponding reduction in the height of the painted metal scuttle panel directly below the windscreen. the 1964 vans also reflected general trends in car design of the time in featuring, for the first time, a pressed aluminium alloy front grille. the longer wheelbase version had the body lengthened by an additional short roof panel, with wider doors.