Ones makes most difference are swaybar, rear subframe insert, steering bushing, alignment needed. Rear camber correction and rck only help when u lower u car more than 20mm. U might want front camber bolt while doing steering bushing too.

U sedan wont need alk(its pillow ball already), and front control arm front bushing won't do much. As for positive shift kit and diff insert, u need groupN mounts before them otherwise vibration will always transfer to softest bushing.

I dont have trailing arm and shock bushing. But I dont think they can affect too much unleas u change the lot.

I would go 24mm front 22mm rear for traction and other way around for slides. The support bar is really useless imo. Whitline links are preload adjustable, kartboy isnt. U will need change front link as soksta said and rear oem link is fine on the mid hole of the bar. And wl comfort endlink (previous ones knocks) is one to go for if u wanna adjustability at rear.

Evor is the cheapeat I found to supply and install whiteline stuffs, but i think there is two weeks waiting now.

using the Perth-WRX mobile app

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MY08 STI 422whp at 1.5bar on E85, built by Diversion Garage, assembled and tuned by EvoR

Update from new owner: 375whp at 1.4bar on 98, at Tokyo Motorsport