Ford half tons have IFS, but the 3/4 & 1 tons don't unless you buy a 2WD model. Chevy is the only one of the big three that will put IFS on a 4WD heavy duty truck.
Originally Posted by blackford76
Nope. '80 thru '98 F-250's have TTB front axles. F-350's are all solid.
Blackford is right on this one. I swapped in a D60 on one of my OBS F250s.