Gc8C48d gearbox code is TY752VB4AA
http://www.catherineandken.co.uk/sti/wrx.html
Unless there wrong mate same engine and box as the version 2 sti, runs td05 turbo and Z4 Ecu almost and sti kind of like the half brother was brought out just before the full sti production car! Was a modified production Wrx between the end of 95 and 96