Well if you have a base model ESi then you don't have one. We just got the suspension techniques front and rear from www.modacar.com . They got them to us quickly but there weren't any new front brackets to accomidate the larger bar and larger bushing. I finally got one of the bushing/bracket combo's on, but the driver side is still not there. I wrapped it in electrical tape to quiet the noise of bar-on-bar action so Stef wouldn't get so annoyed.
If you need the part numbers for the rear, here is all the numbers you need:
These are all from Satan for a 97 GS-T. If you get the suspension techniques sway bars, they come with bushings so you will not need thoes. Other things you may want to pick-up are for the front just to make your life easier:
I think the only thing you would want to get if you want to make sure of no downtime are the endlinks and the nut (you know the drill) for the front because if your car is older, then you may round the nut holding the endlink on. If you do that, then you have to cut it off with a dremel (like I had to) and get new links anyway. Plus, having new stuff makes things so much easier.