I'm using fuel pumps supplied by SDS as appropriate to their system. The twin pumps are Walbro GSL-393 pumps set in a machined alodined frame. Heck, they look so nice I hate to bury them in the back of the plane. The pump can provide 155 liters per hour, or 41 gph. They draw 4-5 amps in normal ops, 5.5 at the max expected draw (20 gph, a pessimistic read of full rich full power) but are to be fused at 20 amps. The pumps run one at time, and I've put the pump selector switch next to the tank selector (switch tanks, switch pumps) hoping to achieve even wear and to always have the backup at hand. From pump selector switch to the pumps is 7 feet each way, 14 feet for the round trip. The wire size calculator says I can use 14 AWG, so another order to ACS... Planning for 20 amps seems crazy, given that the draw is measured at 4.5a. But I'd sure hate to lose a fuel pump on an EI/EFI system. Walbro's comment on filters: "Note! This pump should never be operated without a fuel filter between the tank and the pump. This pre-filter should be 20- to 40-microns. Additionally, almost all applications require a 10-micron post-filter between the fuel pump and the fuel rail. Putting just a 10-micron filter before the pump is not recommended. We offer a good quality metal cannister filter (disposable) with 3/8-inch hose barb ends as well as the outstanding Holley aluminum billet 390 LPH filter with -6 and -8 AN fittings. The Holley filter can be disassembled and cleaned or the entire filter media renewed." I am using a 30 micron filter pre-pump and a 30 micron after. Both filters are as spec'd by SDS and in SDS enclosures, again beautifully machined aluminum anodized gold. Here's a link to the Walbro specifications page: https://walbrofuelpumps.com/walbro-gsl393-fuel-pump.html