Just buy the front strut bar, that definitely help the soft chassis of the corolla. Then if u wish, buy the rear chassis brace by TRD, C-One or Beatrush (the same as C-one by the look of it, and i don't know why its called rear strut bar as its not fitted to the strut top of the rear). And do buy strut bar that don't flex, and the best one I've seen is TRD. Even Cusco flex a little but that is still ok. Something adjustable is not reccommended because majority is less rigid than single piece like TRD, and the reason why its adjustable its because some car the chassis is permanently out of allignment already, and that's where it requires adjustable strut bar to fit. Other than that, its a bit overkill. Unless you really need it for fine tuning the way the car behave. And just because its available doesn't mean you need all of them. Plus, the way I see it, the front strut bar and TRD rear chassis brace have a 2nd function to keep the chassis alligned together for a long period of time (read above)- that's if your driving style causes the chassis to flex. So only those two are, in my opinion, worth buying. By the way, if you install zero 2 with its stiff spring rate, you may not need swaybar especially if you are running stiff sidewall tyres. So do it one part at a time and see if its really needed. Remember, swaybar is there to help the shock absorber as a supporter and not the main player (shock absorber) in suspension tuning. Good luck!