The swap should be straightforward, as they're the same mounting points for both cars. Off the top of my head - I'm thinking the stock sedan bars are 26mm (for some reason that's what pops into my head - but don't quote me), so if your Milano bar is 27mm you may notice the gain. I'm in the process of mounting 30mm RSRacing bar to my sedan - if that's too extreme, someone offered to swap their 28mm with me (which was the size I originally was going for...).