You say "normal GA" aircraft......There's a microlight that comes with the option of an electric fuel-pump....but then it magically becomes a Certified aeroplane........or, the kit-built one that is a microlight, but if you have the option of the factory-built one, you get all the certification, expense, paperwork and controlled maintenance that goes with the Certified route.
Do not discount "microlights" nor LAA "Permit to fly" types (although these are primarily Homebuilt, the LAA also have oversight of any "Orphans" where the manufacturer has gone broke/vanished . a lot cheaper and more flexible than the CAA (Costs An Arm
) alternative that makes you buy parts with an impossibly long lead-time, at a humungous price, from a manufacturer who doesn't want the liability for a "legacy" product, anyway.
note the rules regarding training, hire, overflying buildings, night, IMC......are gradually blending and consolidating. Probably not in my lifetime, but I see the cold, dead hand of regulation , gradually relaxing,before it throttles the life out of GA.....did I mention SSDR, or even Nanolight?......A brave new world of freedom last seen when the Wright Brothers started. Though it did briefly re-emerge when the early Rogallos started to fly and again when they gained a motor (briefly)