Duster differences 70-71

Why I'm asking - IF I track down a sharktooth grill eventually (or willing to pay the crazy price) I'd like to clone my 70 to a 71. Only concerned about the externals. I doubt anyone would notice the ridge missing on the trunk - and I'm not familiar with the taillight bezels mentioned (anybody got a photo ?) Other than that - seems very little on the body is different ?