MitsuStyle - Driveshaft U-Joints????

I have a little issue.... My 93 Talon's driveshaft's U-joint (The one going directly to the rear end is loose, the bearings are shot. So anytime when I put the car in reverse (or forward from going in reverse) When the little slack in the joint gets out it makes a loud slapping noise, and it's really fucking annoying. It's like WHAT THE HELL WAS THAT!!! ...... Everytime you hear it. I went to all the parts stores, Checker's, Napa, O'Reily, and Bumper to Bumper, and nobody carries the u-joints. Does anybody know where I can find these online or somewhere in the state??? And no I'm not just gonna replace the driveshaft with a whole new one, because for one the Mitsu dealer doesn't even carry them anymore, and a 2-piece aluminum shaft runs $750 and doesn't even have the joint I would need to fix it. and a carbon 1 piece driveshaft is strickly race only and can't be driven on the street with the x-case to shaft to diff degree is too much it would just vibrate to hell and it's like over $1000. Let me know where I can just get some stock u-joints to fix all of them right away. Thanks alot guys.