Need some assistance 70 vs 71 340 4 speed Duster

Ok Guru's, Gods, Demi-Gods, and Jedi Masters of the highly coveted and totally Bada$$ Abodies...

Are there any real significant difference between a 1970 340 4 Speed Duster vs 1971 340 4 Speed Duster?

I wish I could actually speak intelligently about this, but I can't (yet).

I have a dying need for a 70. But if the 71 is identical, mechanically and structurally as the 70 i can open my options. I am not a fan of the 72 rear taillights. (Heck I might even consider going 71/72 Demon if it is worth it.)

Is one "supposedly" better than the other? Thanks guys.....:love7:

BTW..Yes I did the unthinkable..I actually SEARCHED before asking this and didn't find anything.