Need help to ID a driveline

[Geoff Padgett]

Hello all

I have a GM driveline that I have had for quite some time now and I want to sell it, but dont know what it is out of. It has never been apart and still has the red injected plastic that holds the u-joint caps in place and it has a short TH-400 style yoke. it measures 58'' long from end to end. 4 1/2 inches from each end to just where the driveline increases from small to large @ both ends. It looks to be in very good condition overall with no dents. Can someone please help me ID this and give me an idea of what it is worth so I can sell it. Thanks ahead of time. Geoff.