It is an aftermarket Airtex fuel pump. Not the best of the bunch but it was the only pump the local parts stores had on hand. (She died while driving and I was able to coast into a small parking lot and I did not want to risk getting towed).

You may be correct about the check valve (or lack thereof). I'm can re-learn how to crank the vehicle over, I just don't want to work around something that is a problem that should be fixed.

Pulled the fuel rail, no injectors leaking either.