..  I have had a few stock 4x4 turbo trucks and none of them have ever had 3.42's..maybe the 2 wheel drives is what they are refering too, I'll double  check though.....  If they had 3.42's they would total doggs with the lag of the turbo and the lower compression off the line..  Like I said earlier  if anything they  need slightly lower gears ..  I guess they made up for it with the lower 151f tranny first gear