In the Tank.
Yes
Under the rear seats. Remove 3 screws from the metal plate and there it is.
if its on a punto gt is a lot of work.have to remove inlet manifold costs a lots for the job to be done in a garage.
under passenger side glove compartment. It is a dual combo relay.
remove plastic wheel arch liner remove power steering pump you can leave pipes on .then remove p.a.s pump bracket may have to remove water pump pullly and remove alt from top
The fuel pump is located under the rear seat, it is very easy to get to but be careful it is very delicate! when removing the two fuel pipes be very careful as the connectors are weak, push the tab on the side of the fuel pipe connectors and at the same time pull them away from the fuel pump, then you unscrew the large plastic nut and pull out the fuel pump.
in the fuel tank
it is on the steering column below the steering wheel
If you bypass the fuel pump the car will not run.
Yes it will fit you would be better of changing box with engine and fuel setup is different so ecu will also have to be changed. fuel pump in tank should be the same but worth checking out...be carefull removing this pump + installing as they are easilly coroded and intake/return snap off. ecu may need recoding as may well eat the petrol but this is minor and very cheap to fix
Idle settings 0.8 bar (11.6 psi ) to 1.2 bar ( 17.4 psi ) best wishes Mike 2