i know the cars your on about

all silver with the wrc kit etc, think they had teh roof vent aswell

but im sure these werent production cars as they didnt need any in that style or homologation purposes as they used the escos in wrc as it was with the whaletails etc so already had there numbers made so they could enter te wrc

then later on they just changed the design a bit for sum reason or other but didnt need to make them in road version

think thats rite