solid axle in a 2006
#17
F350s had D60s 86-97. F250s from the same years had TTB D50s. The trucks from that era mostly used Sterling 10.25 rears. 99 and up Superdutys all have Sterling 10.5 rears except for duallies and F450/550. Superdutys used solid D50s in front from 99-02 except dual rear wheel trucks which were 60s. They switched to 60s in everything mid 2002 so 02s could be either. 03 and up Superdutys all have a 60 in front.