The Top fitting is for Vacuum and adjust the Pressure.
Bottom Hole is Fuel Feed IN and fits a 6AN or #8 Nipple ... (#8 is for stock hose type, 6AN is for a full SS Swap.
Right Hole is Fuel Feed OUT and fits a 6AN or #8 Nipple ... (#8 is for stock hose type, 6AN is for a full SS Swap.) this hose will connect to the Adapter you now have connected to the Fuel Rail!!
Left Hole is an Option Outlet for a Gauge!
Peace
Drew
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