Demon door?? Which others fit?
Here's the other BIG issue, beside the inner mounting brackets. The mirrors are not in the same location. The Dart mirror is almost 4" further back, this is to line it up with the post for the vent window. For a passenger door, maybe not an issue (most didn't have mirrors). For the drivers door, it's an issue. The Dart door would work on a Duster, the mirror would just be further back in the less visible dart location (and obviously not "correct"). But on the reverse, the duster mirror location would interfere with the vent window. You can also see the internal bracket for mounting the vent window. Can't see on the Duster door because its still got the window in it, but that bracket obviously isn't there because of the window.
Now, this is all for the '70-'72 doors. '67-69 doors would all look like the Dart door, and you would need to fabricate the internal mounting brackets to make it work for a Duster/Demon. The lock rod location also changed on those doors depending on the year, but that's not really a problem, just a year correct issue.
I don't have a '73+ Dart door. While the interior panels would only match the '73+ cars, I'd be willing to bet that the conversion between a '73-76 Dart or Duster/Dart Sport would be easier, because the '73+ Dart's didn't have vent windows. So, no vent wing bracket to get in the way. But I don't have a 73+ Dart door, so I don't know if the guides/tracks are different than the 73+ Duster stuff. And the '73 year was a "one year only" deal for the internal mechanisms.
Here's the other BIG issue, beside the inner mounting brackets. The mirrors are not in the same location. The Dart mirror is almost 4" further back, this is to line it up with the post for the vent window. For a passenger door, maybe not an issue (most didn't have mirrors). For the drivers door, it's an issue. The Dart door would work on a Duster, the mirror would just be further back in the less visible dart location (and obviously not "correct"). But on the reverse, the duster mirror location would interfere with the vent window. You can also see the internal bracket for mounting the vent window. Can't see on the Duster door because its still got the window in it, but that bracket obviously isn't there because of the window.
Now, this is all for the '70-'72 doors. '67-69 doors would all look like the Dart door, and you would need to fabricate the internal mounting brackets to make it work for a Duster/Demon. The lock rod location also changed on those doors depending on the year, but that's not really a problem, just a year correct issue.
I don't have a '73+ Dart door. While the interior panels would only match the '73+ cars, I'd be willing to bet that the conversion between a '73-76 Dart or Duster/Dart Sport would be easier, because the '73+ Dart's didn't have vent windows. So, no vent wing bracket to get in the way. But I don't have a 73+ Dart door, so I don't know if the guides/tracks are different than the 73+ Duster stuff. And the '73 year was a "one year only" deal for the internal mechanisms.
