The Forester STi suspension lowers the Forester about an inch. Barely noticeable. The Impreza STi suspension on a Forester lowers it about 2.5 inches. That's what's on ours. We'll be going back to stock before Sandblast Rally, though.
Mike, the 2.5RS ride is a lot worse than the STi, with the same suspension. Heavier car is probably the difference (400 lbs).
And to Kevin Hoff - it's ALREADY the ultimate rallyx suspension, no changes needed. Or haven't you noticed?
Here's the complete setup with additional info...
http://kevinmallen.home.att.net/RS_rallyx_setup.doc