edi

so, i'm new and just bought a 93 Coupe. heres my problems: the KA24DE runs realy rough. i've changed the spark plugs and fuel filter and still its pretty rough. a frind of mine is sending me a fule pump from a 95'. he says that could be the fix. theres no enine check light. i'll also be changing the spark plug wires and dizzy cap and rotor. what ells could be the problem? all help would greatly be appreciated.-edi