I've had two Rams with the hydro formed chassis and both developed a rhythmic vibration like a driveshaft had thrown a weight. Both went back to the dealership several times and they finally said don't bring it back, it's normal. I took the '05 to a drive line shop for u-joints, carrier bearing and high speed balance. Still vibrated. My Ford must be broke as it doesn't have this normal vibration. It seems to be hit or miss on the GM and Dodge with their tuning fork chassis and AAM rear axles. With the Ram it's known as the dreaded drive line vibe on the Dodge forums. I would pass on it but others will surely disagree. And that's ok. Really it is.:B