No need for an electric pump the factory unit will easily feed a pair of 45mm Webers.
Instead spend the money on a decent fuel pressure regulator, something like this...
https://www.burtonpower.com/regulato...sefpr007g.html
Webers thrive on correct pressure of about 2-3 psi and one of these will make a big difference in its operation.
If you do decide to go for an electric pump make sure you also use a tachometric relay, these run from the ignition coil and cut power to the pump if there is no spark for example in the event of an major leak or accident.
These are probably the cheapest and easiest way to go about it.
https://www.ebay.com.au/itm/Brand-Ne...4AAOSwADtasHs8