I have a 2018 RAM SRW 3500 (HO Cummins, Aisin, Aftermarket 4.10 gears) that was supposed to be replaced with a new 2019 SRW 3500 today (HO Cummins, Aisin, 3.73 gears). Unfortunately the truck is coming from another dealership over 250 miles away and will not arrive until tomorrow. In the interim the dealership gave me a 2019 3500 DRW (Cummins, 68RFE, 3.73 gears) to drive as a loaner. Only 21 miles on it when I left the lot today. Imagine my shock to find the 2019 drives like a sports car in comparison to my 2018. It accelerates significantly faster and frankly seems amazingly more responsive. My 2018 seems sluggish in comparison - even the steering feels dramatically heavier on the 2018. Have they tuned the throttle response on the 2019's to make them feel more responsive? Have they modified the hydraulic steering assist to make the truck steer lighter? I was actually shocked at the difference. I am hoping it is not a 68RFE vs. Aisin difference because the 2019 is much more fun to drive and I am hoping my new truck feels as responsive tomorrow when I pick it up. Has anyone else noticed this difference?