zuzu_pali

iknow if i buy the ecu with ecm is plug and play
but what is all the main parts needed for the car to turn on and star and function no problem

please reply so iknow exactly what to buy. so if im buying the ecu with the key what els should it come with so everything can be perfect? for the door lock and trunk lock can i just use the original key i have just to open door and the other key to start car ?
do i need all of this ?
1x ECU/ECM
1x Key/FOB
1x Door Lock
1x Trunk Lock
1x Ignition
1x Steering Lock for the car to turn on do i need stearing lock with it as well?
?
or can i just use old key to open car and new key to turn on car and drive?
is the steering lock important ? do i definatley need to get that and the door lock? and trunk lock?