anyone know anything regarding the OX7 race cars?

[mnrvortxf20c]

anyone know where to find info on the race cars built by john oxborrow? or are they pretty much all one off specials? i have seen 2 for sale and both run a dry sumped c20xe vx engine, and hewland box, and both were red.
any more info out there on these? and its a shame the rear is so ugly as its a good looking car from the front! cheers guys