I have a very small amount of info on the S202.
S202
This car was an S-series Impreza based on the Spec C. All of the suspension and powertrain parts included STi parts from the STi part catalogue.. A smaller, lightweight AC compressor was fitted to save weight. The brake rotors were gas slotted. The wheels were STi labeled Ray's Volks alloys.
And
http://eng.motorsporlari.net/car/tec...48&make=Subaru
http://www.type-ra.co.uk/pdf/S202.pdf