I agree with Tom, even a replica of that great car does not deserve an electric motor.
About 10 to 15 years ago I walked into a Dutch Jaguar showroom, stopped dead in my tracks and exclaimed, apparently out loud, "OMG the XJ 13". The sales manager came over, obviously surprised that a mere American knew what the car was. He asked if I really knew the car and I replied that I knew what the car was but didn't know it had been rebuilt since the wreck so many years before.
They told me the car had been sold to a Japanese collector and was about to be shipped to Japan.
I asked if I could sit in it but they wouldn't let me. They did open it up and I was allowed to run my hands over the extraordinarily beautiful body work and peer into the interior and engine compartment.