Great question: Most parts will be interchangeable. Specifically Engine parts: Intake, header, Intake manifold, fuel rail, and injectors.Exterior parts: Believe it or not the del sol and civic front lips interchange! Driveline: Transmission same if both are d series (sohc). clutches, axles, & wheels. Brakes: all the same or interchangeable.Suspension: Struts, springs, swaybars, and strutbars.Interior: Steering wheel, drivers aribag, seats, shiftknob, & shifter.The parts that you have to know the specific model that won't changeover unless they are the same: i.e. both sohc Vtec or both sohc non vtec models: cams, valve cover, ecu, and distributor. Hope it helps, KC