If your going to run a elec. pump it is always a safety to use a pressure regulator & a small mount inline pressure gauge.This way You know just
what the pump is really pushing out.
And I do agree with John on the air mixture screws Close off the end carbs.Same can go for the Idle screw you can back that off as well & leave the linkage Not hooked up to them and run the center carb.
You can also do like Hyot said and leave the other
to carbs off.
I know many of you have seen my 3x4 tunnel ram
set-up. A test i did one time Just for (GP)Short
tirm ride up and down the street.
Is i ran each carb one at a time No linkage
hooked to the others and it ran Off anyone of the
carbs.Mind you my carbs sit right over each runner
Just normal take offs (just like a Old lady lol)
With having the plenum built as a balance tube
between the runners the fuel still got to each
end of the motor.Not a way I would want to really
drive the car But I just wanted to see if it would
run.And to see if I ever got stuck between a rock
an a Hard place.If sometime was to happen to anyone of the carbs.(you all know what i mean)
So I only made my 2cent comment to prove a point
you won't need to make intake swaps to break your
motor in.You can Use anyone of the above Ideas
and save your self some headacks.