Ok, I got it. According to different folks I talked with "rag joint" is a slang name. At the auto parts store its called a "steering coupling disc". All its meant to do is reduce road vibration like Pat mentioned above. What it is is a piece of rubber. It can be found in the HELP! section of the autoparts store just like Bogie said. For anyone else who wants to know its HELP! # is 31000. The company who makes HELP! is called Motormite. They cost about 5 bucks and I am a proud owner of a new one. My Borgeson shaft just came in yesteday so today is install day. UhOh.
I just picked this up today, because my steering wheel has about 2" of slop each way from the pot coupler being trashed. I figured while I've got the shaft out, I'd replace the joint. The stock joint is rusted pretty bad, and I don't want to use any of the old hardware, but the hardware that comes with the 31000 is nothing like what's on the stock joint... It comes with 2 hex bolts, 3 different size half-threaded pins, a stud bolt, and a tall nut... Can someone explain this before I take it apart? Or do I have to use the old hardware and clean it up?