69 dart 340 drag car... back to street car

As far as the location of things, a '69 Dart did not come with electronic ignition, so the mounting location is up to you- same goes for the electronic voltage regulator if you go that route. Coil mounts on the intake manifold, right rear.
Google up some engine bay pictures of later As to see where the factory mounted everything when it became available in later years.
For example:
16223605-1973-dodge-dart-std.jpg
OIP.jpg