Are both cars hatchbacks ? Sedans never had the AWD so I'm quite sure it could not accommodate. . ANyway, there are differences....the gas tank for the FWD is larger; the awd tank is shallower to make place for the rear train..not sure about the floor. . But first fill up profile/signature with details ab out car(s), year model, transmission, mileage, and location...so we know with each of your posts without you having to repeat or us to ask.
2011 sx4 JX AWD CVT 39000km(Dec2020) Also drives 2015 KIA Sorento AWD 2.4