Inner Big Back Window Conversion Panel for the 1960-1966 Chevy GMC C/K Pickup Trucks. This highly requested panel is a direct insert with your existing panels and will save you time and money converting your small window truck the higly desirable big back window. No more searching junkyards to convert your truck, AMD offers this conversion panel developed on all new tooling. Made to OE specs, this big back window conversion panel is constructed of heavy gauge steel and has all the same bends, curves, and dome light provisions like original. Great fit and finish for your C10 C20 C30 or K10 K20 K30 truck. Proper removal and replacement would be a lot easier by removing the roof skin (sold seperately) and removing the existing panel at the factory spot welds. See below for suggested products. Replaces GM# 3753467