You are buying a used Hilborn fuel pump. It turns nice and the rotor is in good shape. Not sure of the size.
Hilborn Fuel Injection Pump w/ Distributor Adapter Oldsmobile 303 324 371 394
RARE Early HILBORN TRAVERS Flathead fuel injection pump drive pulley bracket vtg
Hilborn PG-150C-1 Mechanical Fuel Injection Pump Sprint Car NHRA Racing NOS
Hilborn PG-150B Mechanical Fuel Injection Pump Sprint Car NHRA Racing
Hilborn Fuel Injection Main Pill Jet Engler Kinsler Waterman Sprint Car .070
