I acquired sometime ago the original service manuel and spareparts catalogue. Incidentally just discovered that the spareparts catalogue contains hand writing notes referring to 1E31701 lhd fhc S1.
Interestingly a compétition clutch was fitted.
Checked on xkedata but car is not listed. So if anyone around knows more about the fate or whereabouts of this car would be pleased exchanging the détails on hand.
Talk about E-Types here