Weird oil leak coming from fuel pump???

Do these include the "regular" stock replacement ones or just the HP ones?

Also I looked at the specs on the HP pumps (any brand) and they all have 1/4" NPT fittings, what size fuel line does that equate to?

About a split between 5/16"-3/8" , Khalil... I am using a Carter M6270 mechanical pump, with no regulator, 8 A.N. (7/16 " I'd) . it hits at 7 psi, with the bigger diameter line.Advertising is "120 gallons per hour@ 7.5-8.5 psi" 1/4 NPT, ran three of these ( at California elevated) , never had a problem..