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I am thinking on fitting a new electric fuel pump i have found a supplier here in the uk
ie what about the Low pressure SU replacement carburettor Fuelflow 12v electronic fuel pump 15LM12 , The Fuelflow ECCO™ 15LM12 Diaphragm Pump is loosely styled on the original SU type electric fuel pump. It is a universal replacement fuel pump and has been specifically designed to suit as wide a scope of applications as possible.
The 15LM12 Diaphragm Pump would generally be used as a replacement fuel pump on carburetted vehicles that have 4 – 6 cylinder engines and a fuel requirement of up to 1.5 Litres per minute. Specifications Typically, these vehicles could be described as large cars with larger than average engines and a higher than normal fuel requirement.12 volts
Positive or Negative Earth
1.5 litres per minute flow
3 – 4 psi
Self Regulating
Solid State Electronics

Go for a good quality pump, but check the fuel pressure it delivers first.
Presuming you have SU carburettors you'll need a pump with a fairly low working pressure (approx. 2 psi)
If the pressure is to high you'll need a fuel pressure regulator.

I have a New Zealand built 12V fuel pump on my 7, fitted after much frustration with the mechanical pumps supplied here.

It is labelled 2 to 3 PSI, & was recommended by the manufacturer as more suitable for the 7 than their 2 PSI pump. It appears that these quoted pressures are indicative, rather than guaranteed, & they were not sure their 2 PSI pump was adequate.

My pump actually sustains 2.3 PSI with the engine running at idle. At that pressure I get very occasional flooding, indicated by the smell of petrol, & the choke tube on the front carb damp with petrol on some occasions when inspected. By occasional I mean perhaps a whiff of petrol once in 100 kilometres or so.

I have lowered the float level of the front carb by machining 1/10" off the top of its float bowl. I have also machined a taper on the spacer where the float bowl attaches to the main body of the carbs, to bring the front float bowl down, & the rear up as much as possible.

Without these modifications, & using the rubber tipped needles in the float bowls, I doubt I could run as much above the recommended 2.0 PSI pressure, without serious flooding.

Hasbeen