i still believe ur car does not have a carb engine...do u have a photo of the engine bay...or the intake manifold in particular.
the 92-95 series civic (more commonly known as the EG Civic in the tuner community) was fitted with multiple variants of the D15 series engine. atleast for north america and elsewhere...they were all single port fuel injected.
the pakistan version im not aware about but chances are that it is not carb. honda discontinued that in the late 80s or early 90s.
u want to mod ur car....all depends whats ur objective is. u must have a goal in mind first. u want a fast car...or u want a good looking OEM style car...or u want a drag racer..or u want a simple street performer.
once u decide on that...u set a budget and get the parts u want. fitting performance equipment on ur car while ur car's quarter panels has rust is a bad idea in my opinion. like i said before....make sure ur car is in top physical and mechanical shape before u start. check the body..underneath for rust...engine and stuff. etc.