What?
They should all be the same...
It goes after your fuel rail - preferably close to the rail, this line would go to the inlet on the FPR, the outlet goes to the fuel tank return, the spare port should be fitted with a pressure gauge and plug in the engine pressure reference.
Done.
Setting the fuel pressure is another story, just set it to roughly 40psi by cranking the fuel pump (ECU) onto reds until its there to get you started, once done that - refer to your manual for proper setup. If it's for an aftermarket ECU with injectors, say ID1000's, set the injectors to 60psi and plug in the dead times for the given fuel pressure.