I happened to take a peak under a 00-03 Supercrew the other day and the frame didn't look like it stepped up at the line between the cab and the bed like it does on my supercab. I'm wondering if Ford designed the screws on the supercab frame. Does anyone know?

 

I believe the Supercrew and Expedition share frames.

 

Pretty sure that is not the case. The wheelbase of a supercrew and an Expedition are different. The Expedition rear wheel well encroaches on the back doors.

 

The supercrew and supercab with 6.5' box both share a 139" wheelbase. Whether the frames are the same, I can't say.

 

Anyone with a superscrew out there mind snapping and posting a pic of the frame near the back of the cab?

Where I am going with this is - how difficult would it be to switch a supercab over to a supercrew cab? If the frames are the same, that makes things a lot easier.

 

body mounts are in a different location.