I know some people like to keep the mechanical pump for various reasons, like looks and originality, etc... and they work well...
But I'll throw in my $.20 in favor of electric fuel pumps. I lived in Florida before, and if I parked the car for a few days or a week, the fuel would evaporate from the carb and it would take very long to start the car, because the engine had to turn over to run the pump and bring fuel to the carb. This puts an unnecessary strain on the battery. If you also drove mainly short distances, the battery would not get charged back up, necessarily.
I absolutely love my electric pump, I just turn the ignition power on, and the pump primes the lines and fills the carb, and it starts instantly. Every time. I ran an electric pump in the engine bay at first, a pump that was designed to be near the tank (Gravity feed type). I just upgraded to a new pump, also gravity type, and installed it next to the gas tank, above the rear axle. Still works great. I picked one that said "For import 4 and 6 cylinders" and lowest pressure of the three available in the store, to match my future carburetor (Weber 38/38).
https://www.amazon.com/Mr-Gasket-42S-Electric-Fuel/dp/B000BWE4RC Domestic sixes (by the product description on the box) were supposedly better served with the slightly higher pressure version.
http://www.jegs.com/i/Mr-Gasket/720/12S/10002/-1...just saying. I'll never go back to mechanic pumps.
There's about a million other choices out there too, these are the two we happened to carry so I picked one.
Back on the old continent people (and myself) used to swear by Facet pumps, my little beetle uses a Facet Red Top, these cheaper little pumps were just not enough to keep up with two dual 45mm Dells sucking it down, even after doubling the fuel line and fitting sizes
Not sure how much pump a truly hopped up six cylinder would require.
https://www.pegasusautoracing.com/produc...CFYkehgodVW4BGA
