I got my 2010 in October 2017 with 16x.xxx miles. It was as close to perfect as an 8 year old vehicle with lots of miles can be and runs/drives great.
First I put on the TRD rear sway, then an S&B intake, then a color matched grill, then tow mirrors & then Bilstein 5100s, which caused the rear to sit lower (which I hated) I put in an add a leaf and it sits correctly. Then I got a 2018 interior skin that I did not know was redesigned so not easy to get on but I got it on (and love it)
Last week I installed my Doug Thorley long tubes & dual exhaust and Bully Dog GTX Premium tune. The truck always had lots of torque but now is a monster!