Very weird one, its a motorsport shell (no sunroof) but has the 909 road shell tow eyes added front and rear and what looks like an original RS500 bonnet and rear fins.

Probably built up from a new shell in the past and just used a 4i logbook to get it on the road. Where the rest of the 3dr bits came from we can only have a good guess at - looks like a typical scrappies place