Development Cars

During the life of the Mk10, Jaguar had bought Daimler in 1960
and before going to the 4.2ltr engine a car was made with the
Daimlers 4 1\2ltr V8 engine the engine obviously had more torque
but less top end power..

Did this development car get sold as a one off or was it scrapped

Do you know of any other development Mk10 \ 420G that didnt hit the
showrooms