If you go onto Bigblockdart.com you can buy a template of the "factory" style wheel opening. Bill Reilley has the template. From what I understand, it was taken from an actual LO23 Dart.
http://www.bigblockdart.com/index.php/topic38890.0.html Look under Body/paint section.
These cars were not pretty ( ok,
they are beautiful to me ) from the factory. The work done to them to convert them to race duty was relatively crude. I have often heard that no two wheel openings were exactly the same.
As far as the hood, you can choose from AAR quality fiberglass, VFN, etc. if you want a nice hood. If you want a cheap hood, then Unlimited makes a decent hood. Kramer auto makes a faithful reproduction hood, but I understand that they are heavier.
Here is a link to an original LO23 Dart restored by Muscle Car Restorations. Lots of pics to see.
http://www.musclecarrestorations.com/gallery2/main.php?g2_itemId=10232I love these Darts, and have gotten to work and crawl all over one several years ago. Let me know if there is anything else I can do for ya.
Oh, and DON'T FORGET TO TAKE PICS ALONG THE WAY!