Leaderboard

Well they are US based and KE20 is rare over there. Realistically you need to upgrade to coilovers from something else- often AE86, and go to a TE27 85mm spaced steering arm to fit them (T3 do those too, factory are rare and very expensive). The ball joint pin is smaller than everything post KE20 so you can’t really use a later factory steering arm. Then you can access better brake, strut insert options and have larger bearings etc

TE27 struts, brakes and steering arms are different from ke20. As are the engine crossmember, tailshaft and rear diff, if that is relevant to what you are thinking. There are myriad other smaller differences.