Yes, you will need to regulate it to whatever pressure you need but the pump, tank, sending unit and the fuel guage can stay and save you a lot of hassel and $$$$$. The TBI is one injector and usually rated at 15psi. I don't know where you are getting the 350tbi but make sure that there isn't a regulator already there. Our TBI setup on the YJ has the regulator on the TBI on the 87-90. You might be able to just bolt up the lines if you are lucky!