OBS to LQ4 Fuel system

[watdog]

So the fuel line on the engine looks like it has both a supply (before the regulator) and then a return line (after the regulator). If I run both lines down to the corvette style fuel filter then I would connect them to the two sides of the fuel filter. The supply line would then run into the fuel filter inlet. So now I am confused at where I would connect the return line that goes back to the tank.

On the tahoe it looks like both lines come off the engine and then run to that style fuel filter. And then the supply from the fuel pump goes to the inlet on the fuel filter. Didn't see a return line for the tank. However, maybe it is down there.

PS thanks for your patience.