What's better? 70-71 Duster taillights or 72?

Might try and see which ones you can find the 70-71 are easier to find. I know I hunted for several months to find some 72's in good shape, like said above they are one year ONLY. But the 72's are lighter they are made of plastic insted of potmetal, otherwise I would have changed the tail panel. I was trying to get my car as light as I could. :scratch: