I have a used Walbro 255lph Inline pump Part Number GSL392.
It is in perfect working order and I have used it in both carbed and fuel injected applications on my car with bypass regulators. Supports a decent amount of power.
Includes -6AN fittings for In/ Out
Also will include the GM Weatherpack and pins for the opposing side of the pump wires.
I will save you the hassle of having to drive out here...
Paypal is fine.