Hello Con, just curious as to why you would want to change it? I started a thread a little while ago on this subject, 90% were against the idea of owners converting, but, hey! It's your car. You'll need to spend a lot of money and you'll need to do it right or not at all.
This means seats, fenders, rear tailpanel, rear light area and of course the grille etc etc. The money you use to make it into a clone could have almost, if not, purchased you a 70 Cuda to begin with.
Just some food for thought.