Most the OEM panels have a small sticker on the inside, also aftermarket wings usually do not have the oblong slot cut out for the indicator light.
However they are a fraction of the price of OEM.
Fully working preowned low mileage fuel pumps for your JDM Import are in stock and good to go same/next day.
Just drop me a PM if I can help you further.
There are many options depending on the severity of the rust areas, but some may not be cost affective.
Fit new 1/4 panel
Fit preowned 1/4 panel
Fit arch repair section
Cut out rusted area and plate as required.
All parts are in stock at the minute.
You will have blown the fuseable link which is connected to the positive battery terminal, just as @stevezzz has said.
I have these in stock and are good to go same/next day.
Just drop me a PM if I can help further.