This is the one I was looking at before, it is on RockAuto under the 5.6l dodge dart, it also comes up on Summit for the car.
I'll look into it all more since I don't have much knowledge on this stuff. Even reading over that thread I got a little confused with exactly what they were doing.
That does not look like it'll fit your Dart gas tank. I think there is something wrong with the applications listing... that thing seems like it fits almost everything! Which is impossible.