If accuracy is important, then the El Camino will not work unless you use the windshield pillars from a hardtop or convertible. In '59/60. the sedans, wagons, sedan deliverys used a different windhsield than the hardtops and convertibles. The hardtop/convertible windshields are lower in profile than the sedan/wagon/etc. windshields and the El Camino rear glass is different than the El Camino. I seem to recall also that the rear glass on the four door hardtop curled around the sides more than the El Camino glass did. Hope this helps. Gary