Someone explain the fuel system on the NNBS for me please. I have heard that the regulator is built into the fuel pump and I was wondering if I installed the Walbro I just got if I will need an aftermarket one. I may be seriously over hinking this. If I have to get an aftermarket regulator, which is the best to get? I'd prefer to get something I can adjust to around 65 PSI at all times.