http://www.ford-trucks.com/forums/index.php, or
http://fordtruckworld.tenmagazines.com/ew/forums.asp
register to view the forums, and post the data plate info for the truck.
someone will be able to decode it for you.
>I have a 75 F-250 4X4 pick UP & I would like to Know! where? I look
> for the Auto Tranny Model & front & rear End Size? any Help
> Appricated!--Thanks--Mack Fan--