I know this response is a little after the fact, but you might still be able to use the input. I'm currently running a Holley red pump on a 1968 Mustang with a 302/600 Holley setup (shhh, it's a V-8) and the pump makes a quiet hum when it's running. I don't know about the Carter; I've never heard one of those running. However, a friend of mine used a couple of the Purolator pumps in series on a motorhome with a Chrysler 440 in it. The Purolator is a reciprocating pump rather than a centrifugal one like the Holley, and it makes a moderate clicking or thumping sound when it's running, but if you use a rubber isolator of some kind, the noise inside the car won't be intrusive, but you'll probably be able to tell when it's running. And by the way, I'm planning on running a Purolator pump in my 64 Nova with a 194 and 350 Holley. I bought mine at a local Schuck's Auto Parts, so they should be available at a Checker/Schuck's/Kragen, Auto Zone, NAPA, or other parts store. The Purolator is also FAR less expensive than either the Holley or Carter pumps, and is a real easy installation.