Answer
Older model eclipses, the 95-99 eclipse gs and rs both came with a 140 hp 2.0 l 16 valve enginethe 00-05 eclipse gs and rs both came with 150hp 2.4l 16 valve engines, basically the gs and rs are the same, gst is the model with 210hp plus a turbogsx is the model with the 210hp plus a turbo and its awd!