Here are the part numbers # 635 on the inside flange, AC- Rebuilt Fuel Pump. The Tags says it will fit 64-67 199 & 232 Engines Rambler Models. The Fuel Rod shaft from the base measures 2 1/2 inches. Truly a great Find for any Classic Car owner, investor into Vintage Parts Store. All Sales are Final. Have a Bless Day stay Humble.