Changing the rear quarters on my Dart conv. from a 69 to a 70

I looked at the "birth" article but each photo had to be opened one at a time and it was super time consuming. I had planned on going back to it but been super busy and haven't yet. I have seen a fair amount of cars done as a 70-up but haven't run across any articles done showing where they spliced the quarters. I have seen cars that have the full quarters replaced from 67-up to 70-up quarters ( hardtops ) but that's it. The quarters on my car are in good shape and I don't feel the need to splice in any larger of a piece than necessary. Thanks for all the info so far.
The thread is older so the pics have been archived. To get to your point, I agree with you that you do not need to cut and replace the entire quarter panel as the side body lines are the same.
If I were doing it the cut would be just in front of the side marker housing and modify the front of the trunk lip area and do as you wish with the trunk.