On vehicles with 2.0 liter engine, vehicle model ("Phase I" or "Phase II") can be determined by the shape of the intake manifold.
On models "Phase I" the throttle body is mounted on the base of the intake manifold, and the manifold rises up to the cylinder head; the fuel injectors are located on top of the intake manifold and are easily accessible.
On models "Phase II" the throttle body is mounted on top of the intake manifold and the manifold drops down to the cylinder head; fuel injectors are less available.