Hi Gary,
You are opening a can of worms I assure you! It is tricky.
These are the only pictures I've got of my previous car where we performed this procedure.
I can assure you it is possible and looked fantastic when it was done, but it is difficult and if you are doing this yourself you will wonder why you started.
I haven't got a pic of the finished product or the door jam and I had professionals do the job, so I can only quote them.
Have fun!
The door before work started.
We made a template for the hinge.
A plate was welded to reinforce and stiffen the door and the catch fitted.
This was what we copied. 39PH.
Getting it all aligned and fitting so it shuts properly and looks correct is time consuming, but I think the effect of those doors adds a lot to the car. I was never happy with the panelled door and so it was worth it for me, but that is purely my own opinion.
Good luck with your project!
Regards,
Nick