If the existing electric fuel pump works why replace it? You only need 3-5 PSI to operate your carbs.

The model pump you mention puts out 4-7 PSI and 35 GPH which is perfectly adequate for your car.

I ran my 280 for several years using an electric pump similar to the Mr. Gasket model. I did end up eventually moving the pump to the rear of the car to make it a "pusher", but it served its purpose mounted on the front frame rail.

One thing to keep in mind. A fuel filter should be installed AFTER the pump and not before it. The worst thing you can do is to starve the pump of fuel. If you have rust problems in the system, then you can install a clear mesh type filter before the pump. Do not install a paper element before the pump.

Examples: https://www.knfilters.com/81-0300-replacement-fuel-filter

https://www.amazon.com/JDMSPEED-Universal-Heavy-Electric-Petrol/dp/B00L8IHM9K/?tag=tdtrx234-20&asc_source=browser&asc_refurl=https://thedrive.com/reviews/38374/electric-fuel-pump

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