Dan. The A bodies are:
1963-76 Darts, Valiants.
1964-69 Barracudas
1970-76 Dusters
1971-76 Demon/Dart Sports
1964-71 Dodge A-100/108s might work. You might have to modify something.
Polaras, Monacos and Furys are C bodies and unfortunately would be too wide.

What engine and tranny combo do you have in your Dart?


Martin
'64 Nova wagon
'69 C10