Hummm...
Yes, I guess one of the attributes of diagnosis is to ask the right questions. So, if you do get dirty, and get down under the car, it would be good to figure out just how the electric fuel pump is plumbed into the fuel delivery system.
If I were you, I would kindly ask the former owner if the electric pump was added as a "cure" to a problem and if he "normally" ran the car with the electric pump off or on.
It may just be that he ran the car with the pump ON all the time.
Changing Gears....
Think twice about the Cobra logo floor mats. You and your feet know it is a Cobra. My advice is ... Always err on the Less is More side. Fitment on the ERA matts is interesting as the matts are NOT symmetric, the passenger side being narrower than the driver side. So no matter what you do, your old matts should be used as a template if ERA is not supplying them.
I saw some firm that made matts in an old SAAC magazine that I have but for the life of me, I cannot remember who that was. There have been alot of small firms that have come and gone over the years it appears.
Does your car have the SW Gauges? How are they working? Is your car equipped with an
oil cooler up front?