Abstract: A simulated T-top installation is provided for automotive vans. Cut-outs for roof windows are made, and a molded fiberglass fairing is superimposed, extending between the opposite rain gutters from the windshield to aft of the doors. Removable window panes are installed on continuous gasket strips on recessed ledges projecting from downward-formed rims of the fairing, inwardly of the cut-outs in the sheet metal roof. Notches cut in the sheet metal at the forward outer corners of the cut-outs accept locally deepened sections of the fairing, each having a drain passage leading outward from the recessed ledge. Water entering about the window pane edges will flow along the ledges between the rims and the window gaskets to these forward outer corners, to drain through the passages.