Need advice for modified truck

I purchased an 84 ram charger equipped with a 5.2 magnum efi 93 motor. The fuel pump went out within a month, when taken off i saw it was a mallory marine fuel pump. Ever since I have been looking for an electric fuel pump with a return that will push at least 40psi and cant find one. I need to get this truck running asap as it is my only means of transportation. Open to any suggestions to fixing this problem.  

you can ran a inline fuel injection pump off of a late 80's early 90's ford pickup