Yes, the struts basically have the lower mounting further down the strut, so if you got yourself a set of 2.5RS AGXs or 2.5RS stockers, it would drop you down to 2.5RS height. Personally? I'd get a set of eibach Prokit springs and AGX struts. That's what I run on my '96 Impreza L for Track and Auto-x. Good fun.
The OBS we ran was a '99 when both my buddy and I couldn't get a car for auto-x we took his mom's, threw on some R compounds and were good to go. I'll look for the pic I have online somewhere of it!