What's the best electric fuel pump for carburetor?

In my opinion, ANY motor drive pump that is "dead head" whether it's working against a (closed) needle/ seat, or a regulator, is subject to problems. The rotor sits there churning and cavitating and making heat.

Investigate if there is an old fashioned "pulser" that is electronic and reliable. I once had one, forgotten the name. 'In it's day' it was a LARGE pump, larger than the Bendix/ AC pulsers which had electrical contacts. This one was electronic. I had that thing for a few years, it finally failed