1974 L Code 360 Duster 4 speed with Moon Roof
I can’t quite make out the scheduled production date on the build sheet. What does the fender tag say? Reason I ask is the instrument panel/cluster appears to be a 1975 since it has the two idiot lights to the left of the speedometer. I suspect your Dart could be a late build 1974 and got a 75 instrument cluster? Perhaps yours was made in June/July 1974?
Something to consider defeating is the seatbelt interlock…. They were nothing but trouble for 1974 which is why it was only a 1 year product.
Awesome find and keep us updated on the progress!!