Well i learned a hard lesson yesterday. Started getttin that infamous U-joint clank and clunk. Figured it was pretty standard just replace the u-joints on my rear drive shaft.1-2 hours tops. Got all the old joints out and started re-installing the new joints i got from the local parts store. come to find out the ones i bought only fit the rear of the rear drive shaft. The double cardan set-up on the front of the rear driveshaft has a different sized joint. So i hit up toyota and they tell me that the double cardan portion of that driveshaft is a "non-servicable part" meaning you cant buy that part because it doesnt have a part number. They did however offer to get me a new rear driveshaft...for 1k plus shipping to AK. haha so anyway now im stuck internet shopping for a whole new rear drive shaft since the old u joints were a bit beaten on the way out of the shaft. Not sure if this info is already common knowledge and im just an idiot or what but i figured id share to hopefully prevent someone else from running into this issue....FML :roadkill: