Al, looks like you're starting at square one with this one. For starters, there's the large hole at center for the harness & vacuum line to the wiper motor. Choke on pass side, throttle on driver side. You may have had an aftermarket hot water heater, which would have two holes. A hole for the speedo cable, screw holes for mounting footfeed lever, ignition resistor, speedo clamp and gas line , and mount holes for the firewall insulation pushpins.
You would do well to buy the 35-36 Ford book from the EFV8CA, Also available from the Foundation as well as the major parts suppliers. Pictures and text, the 36 Ford bumper to bumper.