I have a GTi 4WD [Euro version of GSX] which has 4-Wheel Steering. I was under the impression all of them came like this, but maybe the European version was different to the US ?
I also know there are a few [even rarer] ECS-equipped GTi/GSX cars, since the ECS was an option. I've even seen one person [in Canada I think] who has a GSX FWD with ECS, so I guess things got a little f***ed up when they were planning this car, since there seems to be every permutation on the options list you could get :s