Quarter panel question
 

Doing a little welding on my 73 project. I have a question. I am planning to replace the front half of the rear passenger quarter panel. I have one from a tagra that I parted out earlier this year. Can I use it for the front section? Where does the contour change for the targa window as opposed to the coupe? I plan to install RS flares as well afterward so the flares don't need to match. Photos below for reference.
Thanks in advance,
Kirk

http://forums.pelicanparts.com/uploa...1293668963.jpg

I also could really use the dimension from this thread, post#54, except for an RS flare. Any help would be greatly appreciated.

http://forums.pelicanparts.com/porsche-911-technical-forum/298521-welding-flares-longhood-rsr-alignment-questions-3.html

Thanks,
Kirk

Anyone?