Didn't know where else to put this so thread resurrection ahoy!!
I've been playing around in DashWare to recreate the GT86 gauge clusters. Wouldn't take much to tweak/adjust for the BRZ/FR-S.
Everything is functional if you log the correct parameters:
Speed
RPM (Includes shift light)
Gear
Oil Temp
Ambient Temp
Accelerator
Brakes
Latitudinal G
Longitudinal G
Steering Angle on MY17
I can share these out if anyone is interested.