If the faucet you are talkuing about is for the kitchen sink, then most of
the smaller (not very tall handled) faucets for household bathroom sinks
should just bolt right in.  I don't know anything about adding an electric
pump, since mine came with it.

I disliked the fact that my kitchen sink in my pop-up was too short to get
tall glasses or the coffee pot under, so I replaced it with a faucet for
bath tubs, which has the built in "sprayer/shower" attachment.  It has a
knob that you pull to direct the water to the shower, instead of out the
faucet.  Then I took a shower hose assembly, and cut the hose about 4 inches
from where it screws onto the faucet.  I took 1/4 inch copper tubing and
bent it into an upside down "J" shape.  I coated a couple of inches of the
long end with "Gorilla Glue" and inserted the long end into the 4 inch piece
of shower hose (which still had the female end to screw onto the male end of
the faucet) and forced it in as far as I could get it.  Now, when I want to
fill the coffee pot, I just put it in the sink, turn on the water, and pull
the knob up.  When I get ready to close the pop-up, I just unscrew the "J"
shaped piece which I built, and lay it in the sink, since the bed slides
over the sink when closed.

My shurflow broke the handle off, and it seemed that most of the handles
with the built in pump fit the same hole.  Forgot what brand I bought, but
came with a square cover plate almost the same size.

Mine was leaking also so I replaced the O rings. They are .10 each

Greetings,

Is the hole left by your old faucet approx. 2" in diameter?  If so, then
when the pump/twist style faucet on my old '98 Sea Pine went south I found a
piece of scrap aluminum plate approx 2"x6" and polished it up nicely,
drilled standard faucet holes into it and mounted it over the old hole,
sealing the edges with clear silicon caulk.  I then purchased a "laundry
faucet" from Home Depot and mounted it in it's place.  Since the Sea Pine
didn't have a hot water heater, I hooked up the city water connection to the
cold water side, and purchased an inexpensive pump/pressure switch
combination from JC Whitney and mounted that right next to the water tank
and ran the line to the hot water side.  The inverter/power supply was
already mounted next to my on-board water tank so it was a very simple
matter of installing a switch and fuse on the outside of the cabinet next to
the inverter panel.

When I was using my on-board tank, I'd just turn on the switch and the pump
would pressurize the water line up to the faucet and shut off when the
pressure switch was tripped.  Opening the hot water side of the faucet would
drop the pressure and start the pump until it was shut off again after the
pressure built back up.

All together, I paid about $20 for the faucet, $50 for the pump, and about
$4 for the switch and fuse.  A little wiring and elementary plumbing and it
worked like a champ.  I was going to add an inline filter between the tank
and pump but we sold the Sea Pine before I got around to it.

Cheers - Jonathan