Mate,

have a google seach of "rex on rails" --- its on the whiteline website as PDF copies. Its info on suspension mods for a 94 wrx using whiteline gear, its an interesting read.

but my suggestion in order of which you should do first is ( i have it on my GC8 )

24mm rear sway with HD links
ALK
camber bolts on front.
22mm front sway

and also pay for a wheel alignment after the mods (toe and camber alignment)

im also running lowered (not superlow) kingsprings with Koni struts. i scrape on large speed bumps, so dont go superlows!

goodluck with the mods.

Steve.