Where to find filler neck

Looking at the listings they can't fit the models they are claiming. Scamp and Dart body styles are different then Duster ,Demon, Dart sport. The curve is different at the quarter and will put a slight buckle in the quarter if interchanged. That is why the two body styles have a different amount of attachment holes 3 verses 4 holes. Also 72 and newer, All tubes fasten to the quarter, Earlier style the quarter fastens to the tube.

Your tube for a 72 scamp should have 4 mounting holes and the tube should slide through the quarter and the screws go through the tube and screw into the quarter.

I have tubes for 72 Scamp/Dart