As a small note, depending on what mounts you use, you can reuse both driveshafts. I have a 6.0/80E combo, and use both my driveshafts. All I did was use the adjustable dirty dingo mounts and moved the engine and trans assembly back and forth until I was satisfied with the way things fit. My truck is a 92 though, and the front driveshaft was collapsable and such.