GSi is probably the equivalent of an LS... They didn't have the "Special Edition"/GS yet, and judging by the specs... yeah...it's an LS
Actually, both those springs are good (I'd go with the one you can get cheapest), and I'd reccomend looking at getting some KYB or Koni's (Adjustable dampening... you will love yourself if you get adjustable shocks) to compliment your lower spring ride height... if you have your original shocks in there and you use lowering springs (1.5" or greater) on them, I guarantee you they will blow out in less than half a year...
I'd look at getting some Tein full coilovers if you can bank one of those setups. For the ease of install and the adjustability they offer, they make a pretty good bargain...
Also, if you know anyone who has some Aussie-spec ITR taillights for sale, hook me up!!! :awais: :awais: I've been looking for some for the longest time now!