What would you do?

Get yourself an Australian Valiant VE wagon to do your resto mod on. It will give you the styling of the 67-69 Dart, will be totally unique, and you'll have the versatility of a wagon.
(You can use 67 and up Duster, Valiant, Dart or A body Barracuda parts from a salvage yard to convert it to left hand drive.) The biggest problem would be the cost of shipping.