Yeah I'm a little curious, the measurements AJ took from his fastback match my Duster almost exactly. Within the standard body tolerances these cars have anyway. Your measurements are almost the same as my '71 Dart, which got me thinking maybe the notch's used the other outer wheelhouses. I was operating under the impression that the Barracuda's were pretty much identical to the Duster/Demon/Dart Sport wheel houses. I don't know why the notch's and fastbacks would be different though. The inner wheelhouses are all the basically the same '67+, the outers were different by body style. But I would have thought the quarters on the fastback's and the notch's would have been in the same place at least. They came from different tooling though, so maybe not.
Like how the 67-69 darts seem to have a little less room than the '70+ Darts. The frame rails and quarters should all be in the same place, but the tooling for the quarters changed because of the re-design and the 70+ Darts seem to have a bit more space than the 67-69 cars. Not a ton and there are exceptions, but the 70+ run on the wide side of the normal body tolerance while the 67-69 Darts seem to run on the narrow side. I dunno.
