Is the Plymouth Duster a fastback?

It's sort of a fastback according to the VIN information. EVERY fastback (Barracuda and '66-67 Charger) carries a "29" body designation ("Sports roof"). So do Dusters, Demons, and Dart Sports. Then again, so does a 1970 Challenger SE. '68-70 Chargers also carry the "29" body designation (research indicates). So, yeah, I'd call it close enough to a fastback...