I installed a set of JC Whitney 27" turnouts on my 2010 America. Now it sounds like a bike and looks the part too.
Not too bad at 150 bucks after shipping.
I did make a baffle for each side so I am at 165 for my pipes.
http://www.flickr.com/photos/60014732@N05/5863850997/That is before the baffles.
You just won't get that really deep rumble from the stock pipes. They just aren't big enough in diameter. They do sound good debaffled but they just didn't work for me. I even removed the cat from my stockers
