Why can't you use the
Ford build tool to find out what is availible today?
Clarifications:
Regular cab 6.5' and 8' bed
Supercab 5.5', 6.5', and 8'
Supercrew, 5.5' or 6.5'
Majority of Supercabs are 6.5' beds. Majority of Supercrews are 5.5' beds. 6.5' bed on Screws starting in mid 2006. There is no 6' bed on the F-150, only Ranger and older GM full sized trucks.
Wheelbased of -03 Screws was the same as the extended cab 6.5' bed truck, 138". Basically, trade 1' of bed space for 1' of cab space. 2004+ uses different wheel bases and frames for the Screw and Supercab.