I'm not 100% on which bumper belongs on what year. I've got the single lamp assemblies on either side. I like them more than the split stop-turn-tails. Maybe my bumper isn't correct for my year. I have a 72 Scamp.
It looks like a '71 to me because the rear marker lights are sunk in as to where the '72's have marker lights that are on the outside of the quarter panel..