Oz - already having fun - can't wait for the weekend to come.... diggin in now:

I have a 2006 truck.

I substituted a "6" for each of the two "4"'s in the link you posted and guess what????

....there was the 2006 Workshop Manual
<TABLE style="WIDTH: 607pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=809 border=0 x:str><COLGROUP><COL style="WIDTH: 607pt; mso-width-source: userset; mso-width-alt: 29586" width=809><TBODY><TR style="HEIGHT: 15.75pt; mso-height-source: userset" height=21><TD class=xl24 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: #d4d0c8; WIDTH: 607pt; BORDER-BOTTOM: #d4d0c8; HEIGHT: 15.75pt; BACKGROUND-COLOR: transparent" width=809 height=21>http://www.motorcraftservice.com/pubs/content/~WS6O/~MUS~LEN/20/S6OLEFT.HTM</TD></TR></TBODY></TABLE>

and similarly, the 2005 Workshop Manual:
<TABLE style="WIDTH: 607pt; BORDER-COLLAPSE: collapse" cellSpacing=0 cellPadding=0 width=809 border=0 x:str><COLGROUP><COL style="WIDTH: 607pt; mso-width-source: userset; mso-width-alt: 29586" width=809><TBODY><TR style="HEIGHT: 15.75pt; mso-height-source: userset" height=21><TD class=xl24 style="BORDER-RIGHT: #d4d0c8; BORDER-TOP: #d4d0c8; BORDER-LEFT: #d4d0c8; WIDTH: 607pt; BORDER-BOTTOM: #d4d0c8; HEIGHT: 15.75pt; BACKGROUND-COLOR: transparent" width=809 height=21>http://www.motorcraftservice.com/pub...20/S5OLEFT.HTM</TD></TR></TBODY></TABLE>


Thanks again (ps I sent some rep points your way).