Personally, unless you are going racing, I don't see the point of electric pumps. I ran the small square-top Facet in my 1500 Herald for a while, and not only did it sound like I had demented woodpecker locked in the boot, it also overwhelmed the twin SUs. Fuel pouring out of the vent holes in the float chambers right over a hot exhaust manifold was not clever, so I duly fitted a Filter King regulator, and reduced the pressure, which required the adjusting screw being most of the way in before it stopped over-fueling. That fix worked for 6 months, before, when backing out of the drive one day, strapped in to the car, the other half screamed "stop" while making frantic slashing gestures across her throat. I did, and baled out in jig time only to find petrol pouring out of the grommet hole in the spare wheel well. After applying a hosepipe to the drive and the underside of the car, and extracting the (sodden and ruined) boot mat, I discovered that the gasket on the filter king had deformed and blown out of its seating groove, dousing everything in petrol. At this point I decided I had had enough, and stripped out the electric pump and regulator, and ordered a stock pump from Rimmer's. That worked, until it became evident that it was repro, and started leaking at a rally. Inspection proved that the fibre sealing washer from the top had been assembled on the inside, and our attempts to get it to stop leaking stripped the thread in the monkey metal it was made from, with only gentle tightening. I went to out local Triumph Breaker the next day and bought a S/H stock 1500 pump for a fiver, cleaned it and fitted it, and it is still there 3 years on.
Moral of this sorry saga - Triumph knew what they were doing in the first place, and if it works, don't fix it!
I now have the Facet mounted on a board, with a couple of leads, croc clips and lengths of fuel pipe. This slots on to the front wishbone, and I use it to draw fuel through the system at the start of each season, and to drain the system for Winter. The only thing to be said for electric pumps IMHO is that they don't flatten the battery getting modern (volatile) unleaded through a dry system after a lay-up, but to each his own!
Steve C