To the Allisonman, Sir, I am looking at a '94 Coachmen Santara, 32 foot, GVW 20000, with a Cummins 210 and Allison AT545. I understand the trans has uphill and mileage limitations because it has no lockup feature. The coach I'm eyeing has only 8,000 miles on it. In spite of the transmission limitations, am I better off with this rig or a similarly priced and configured gasoline unit which would likely have a Ford V-10 Triton? I tend not to push vehicles hard.