correct a body filler neck???? for 70 swinger

snowmobiler7c said
No one else has ran into.this issue? Will the 69 dart style work?

The eBay listing I saw from Vans only had 67-69 Dart listed for the filler neck. I don't know why more of these are not reproduced, but I suppose demand (or lack of) has something to do with it.