http://www.superdutydiesel.com/
this site is a little more user friendly relating to ford trucks.
our 2006 has been pretty flawless so far and we jsut went over 15k on her, placed in service last july.
has had the emission recall, power is still very nice and mpg is a solid 15, but do have 4.30 gears.
towing is a good 11 and lots of grunt.
it replaced my 02 dually, i miss the 7.3 but my 06 is trying to make me just as happy.
just my nickle
robert