My last truck, same thing just a longbox and not lifted lasted me 8 years. I bought it with 80,000 miles on it and sold it to my dad with over 205,000 on it. Never had any major problems, the worst one was replacing the steering sector. Mileage was around 12 if I played around alot and got after it; and I would consistently get 16 down the highway bout 68-70 mph. Guess that's junk.