72 down

Ok so I though about this before and think I might do it. What all would I have to do to convert my front end of my 73 Duster to a 72 down front end. I know I will have to change

Fenders
Hood
Bumper
Grill

What about the rear bumper could I swap it with a 72 down.

I would like to do a Demon tail anal but I cant to the melted lead thing

So what eles would I need to do the front