i was wondering what kinds of engine are their for american cars and what kind of engines can i put together with a car. dose that make sence, let me try this again example for Honda Civics, Or Acura Integra's i know that a b16(Civic Type R) engine will fit in both the integra and the civic and the b18( Integra GSR) and h22(prelude engines) will fit in both make of cars, you know what i mean? so what im asking is whats the deal with like big block small block and so on? how would i know what kind of motor would fit in the car that i would want? also do you guess just get new motors for the cars, or some times rebuild it and get bigger valves and pistions and so on for more power? can you guys help me?