I have an eibach 22mm adjustable rear arb on the back on mine (set to the stiffest setting) a roll center correction kit on the front (HardRace), this made a world of difference to the coil overs which on there own at low ride heights made the car prone to bump steer.
Have not yet fitted an ALK kit.. I have about 4.9 degrees of caster already, although it will give more.. it will also slightly increase dive+lift..even though they call it an anti lift kit??? go figure,
I had the same problem Sam finding nice shocks for it when I needed to replace mine for knocking hence going down the coil over route,
I might fit an ALK kit after Christmas, but not at the top of my priorities list at the moment as quite happy with the way the car handles.
It might be worth giving Ayln at AS performance a call, or the guys at Camskill and ask about some up rated KYB's.. Bilstiens from an RB320 will fit also,
I'm sure there will be something available upgrade shock wise these days.
.... Or sell the springs and get some coilovers!! :P


think I've linked you these before