What type of cold air intake should be used for a swapped engine?

The type of cold air intake that should be used for a swapped engine is the type that is listed as working with the engine. In other words, if your vehicle is an 1996 Acura Integra, and you swap the engine, you should use a cold air intake for an Acura Integra, although you are in luck with this particular example as Integras and Civics from the mid-1990s use practically the same engine line and parts so you can easily swap in a cold air intake for a Civic and you'll be all right.