Well this is an impressive amount of technical information. I certainly came to the right place for help. From the info you've all provided, it seems there might be some less expensive explanations for the clank (expensive one being the transmission). The seller said someone is come this morning with cash and a trailer. We shall see. If that doesn't happen, I'll offer him 7K. I'm kind of intrigued myself as to the issue after reading this thread. If I end up with it, and figure out the issue, whoever was right wins a prize!!