1964-1966 C-10 double DIN panel . Made of 18g steel .
Before welding in , test fit your Radio and drill your holes for fastening the radio to the panel. Lite trimming may be required if running the radio cage around the radio .
Depending on how large your radio is it might require your motor wiper to be replaced to a flat side . Here are the links to ones most customers use if they run into that problem .