There should be no debate regarding polished or brushed for 70, it's only polished.

As for a debate for early 71 models...

I have a perfect set of polished for my 15x7's on my 71 charger se, build date of 1/13/71(built exactly 3 1/2 years after I was born)

I know the brushed is correct, but i scored a helluva deal on the polished set of 4, still in plastic bags. Yes, i'd consider an even trade for a nice correct set of brushed ones (hint hint)