When I first bought mine I was planning to drive it down from Edmonton, AB about 750 miles over the rockies. It would have been a very long trip: The truck felt like it was winding very fast indeed at 50 mph. At 40 it felt more relaxed. Better, even, at 35. With a load on, on the other hand, 50 was easy. This one...
http://inlinethumb18.webshots.com/42833/2078187180096215731S500x500Q85.jpg
weighed about 3,000 net, and the truck felt very good and relaxed at a 50mph cruise.
I have changed wheels, tires and diff ratio to 4.10 - 1. Now an all-day 60 mph feels not bad, but she relaxes at 50 - 55 empty.

1951 3800

Be the change you want to see.
-hotshoe