will the 2013 street bob battery box covers fit on the 2012's? i hope so i hate the silver band but love the plain cover on the 13's

 

Before you get rid of it, check out the battery box bag about halfway down the page. It bolts to the four holes that the chrome band attaches to.
The 2013 SB doesn't have the holes.

http://www.badgcustoms.com/dyna-bags.html

They are interchangeable between the '12 and '13.