Hi all,
I have exactly the same issue for rear now on 2024.
If we could find brake discs with same ref but height 67.5 -> 63.5 it would work perfectly.
63.5mm is the height of rear discs from 2008 WRX Impreza, but if I take this disc, the handbrake part is not the same, so my black STi caliper doesn't fit (touching center of rotor).
I can add a 5mm shim inside (between disc and hub) but it is a workaround, not a solution.
Now my question is, what hell are rear calipers and hubs on the 2005 "tuned by STi", because if it is the hub same as Legacy OEM and the caliper is the same as 2 pots rear black STi, the brake disc will necessarily be a separate model. The one we are all looking for !
Another one question is, does it exist brake disc on aluminum hub for STi rear ? In this case, we could make custom aluminum hubs and purchase only the disc part !?