Fuel Pump Location?

Hello,
I have a 1980 Porsche 928 and I need to know where the location of the fuel pump is. I've looked for it and haven't found it. Any help would be appreciated. Thanks.
 

There should be two, a primary and a secondary.  Primary is on the bottom rear of the gas tank under a metal panel.  The secondary is in the passenger rear wheel well, towards the front.

Thanks a lot for the help! Much appreciated.