
I think it is an untypical body as according to result tables and race reports most drivers used either a Prophet, M20, Porsche 917, Schkee or TOJ that time. Two remaining bodies mentioned once were a Lola and a Dome, both being available also from Spectron but no pics available. So maybe it´s one of them.
But also it´s possible the body isn´t same age as the car and electronics and a much younger one was used here.