In a message dated 10/14/01 9:36:44 PM Eastern Daylight Time, wgraefen@xxxx writes: > cannot remember which way it went but there is a few inches > difference between the C and the D. Don't ask me why the engineering change > but it is there. Wayne and All, According to the scuttlebutt at Chrysler Engineering at the time, whoever designed the rear springs for the 1957 Chrysler products used the unladen weight instead of the laden weight to calculate the specs for the springs. There were a lot of people changing rear springs because of it. I laid out in a snowbank to swap springs from a '57 and a '58, because the difference was so noticeable. (I was lots younger at the time!) Joe Savard Lake Orion, MI