For the 94-01 years there are some suttle differences. I own a 1999 Integra GS. First of all, the LS is the base model for the Integra so no leather interior. Your wheels are different also; design, size, etc.. There is no moonroof either, unless it was a option. The LS may only have manual windows and locks too. As for the engine it should only be the B18B1 block without VTEC. Unless the Integra was purchased as a GS-R or a Type-R.But mechanically its the same good old Integra only lighter.
If you have any more questions c