what kit I used is the HSD STi GRB 08-12 set up, what I keep from my Leone is the top mount bracket and spring perch cap. drill the same size hole as the washer from the HSD kit so the spring perch cap will go on.
then pop out the bushings & tube from the HSD GR STi stuff and use them on your new set up.
the only other thing is the lower mount on a GR STi has a 55mm wide bushing tube, you would need to cut it down to 45mm size to fit in the rear control arm lower. the bolt is the same 12mm size flange bolt so no need for a spacer in the bushing tube.


all put together


so if one is going to be buliding a Leone in the future the best kit to get would be the Subaru GRB STi 08-12 suspension kit. ohlins ? KW ? Bilstein ?


the front you would need the GRB STi 08-12 knuckle with the bolt on bearing which is better they say for its bigger bearing, the top plate will not work unless you drill it out to match your car top mount pattern which is pretty much the same as a 1989-2001 Legacy impreza car pattern.
also the rear in the BRZ is the same as the GRB, the front is the same as a 1989-2001 impreza legacy but the shock is shorter but will work also with the non larger knuckles.