Welcome! I would always try to hand calculate the mileage, so you can get a true figure. The computers are somewhat close on a completely stock truck. Find you a nice app and give it a try!
We've got some good info here, stick around and make yourself at home!
@Mblack0373 - that's the million dollar question! Tuning the truck seems to be the best bet, but it's a risk itself as if something major does happen it will likely void your warranty.
Kind, or you mean person? I would see what tuning company wants to work with you. Sofa King Tuned comes to mind as a few other custom tuners doesn't seem to do much performance tuning.
Usually compound kits and other heavy mods require the the tuning to be dialed in to get the best possible...
Welcome! If the motor goes and your tuned, your warranty is likely gone. Overall, I can't say what's the best year to buy, but the newest maybe might be the best answer here. If you're buying one used, make sure you have the maintenance records and it's been taken care of..