Yes my 2013 F250 6.7 has 3.55 gears. I went to the Dealer today about the Service Engine light. It was something to do with the Catalyst or something. There was a TSB this month on the 2013's. they did an update to the Powertrain Control Module. Cleared it up.

Lets just hope the more miles I put on it the better gas mileage. The next trip to Florida is in January. I will hope for improvement, just won't have high hopes.

I will most likely get airbags installed before hand. Which one do you recommend?