I bought an '11 DCSB with 44k on it this summer. The '11's and perhaps other years did have a few bad driveshafts installed. The prior owner of my truck lifted it before figuring out his vibration problem, so his dealer wouldn't honor the warranty. He decided to replace the two piece driveshaft with a one piece, and when they removed the two piece driveshaft found out that it was slightly bent, and apparently had been that way since new. Another weak spot is the driver's side front differential bearing, which can cause vibration both when a truck is un-lifted or lifted. That vibration is felt in the drivers floorboard, and stops as soon as you shift into 4-Hi. There is a detailed thread on this on Tacoma World. An company manufactures a bushing to replace the bearing and solves the vibration problem. The other issue I've had is that the blower fan makes a ticking sound when on at less than full speed. Toyota used a bushing instead of a bearing, and the bushing makes the noise. In either '12 or '13 Toyota started making the fan with a bearing. If you buy the truck, get the fan replaced under warranty before it expires. Also, if the truck is lifted, have them put in writing that they will honor the warranty including anything affected by the lift. Many people with lifted trucks have been denied warranty coverage on drivetrain issues. If you are going to lift it, make sure you have the drivetrain has no issues first. Hope all this helps.