I must have read this wrong earlier. The C1 heads ported, and ported BT intake will be stressed to make 1 hp/ci without lots of compression, and camshaft change. The stock style fuel pump should be more than adequate to keep the carburetor supplied with enough fuel. A rebuild from O'Reilleys, or any auto parts store will work just fine. My 345Y makes 402hp, and I use a stock replacement fuel pump without any issues. The sock on the fuel pick-up tube can be clogged, fuel tank rusty, fuel lines rusty, or the ceramic filter in the glass bowl be partially clogged, all hurting fuel flow. If those are all new/clean, then I would suspect the ignition, coil, resistor, wires, plugs, or float level wrong or bad. If all this is good, then yes, you can use a FE fuel pump for the model year up through '64 if the car has electric windshield wipers. I know many folks that have stroker Ys with Mummert aluminum heads, ported intakes, headers, cams, 1.6 rocker arms, and they get by with the stock style fuel pumps. IF all else fails, then add an electric inline fuel pump to assist with a pressure regulator set for 5-5.5psi. Joe-JDC