having restored a 67 roadster, i think your comments on the handling are unfounded. my experience is with the earlier cars which are renowned for being better than the later, more power & better handling. With a good set of modern tyres they are good cars. You run out of grunt before grip. my car has been fitted with orig and spax shocks at the rear and both perform very well.
One problem i can see with the hybrid, is rot. not the best at corrosion prevention, so why go fitting it to an off road chassis?