Dan, We have 2015 Windsport 27K that I recently added an additional Roadmaster rear sway bar on. I also have made the same mods you have. We've put about 600 miles on since the upgrade and I feel the improvement was worth the effort especially in regards to the wind. I installed this as well as all the other items myself. look at the following link to see how it attaches. On ours everything lined up perfectly.
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