I have a 34.4 2016 Miramar. I have found the larger rear anti-sway bar to do the job. I have no issue with the ride of the Miramar so I didn't consider changing the suspension. I was more concerned with the body sway when driving in windy conditions or getting/passing semis. The sway bar addressed those issues.
I also added the Safe-T-Plus on the front for blow out protection. That made the biggest change in handling on uneven road conditions, crossing bridge joints and just overall drivability, especially in gusty wind conditions.
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