Hey, I know there aren't a whole lot of F150 owners here but, I was wondering since the 4R70 is also used in the mustang, if it is possible to switch to a 4R100 from the 4R70. Seems ford gave me all HD compnents except a transmission. Any help would be good. It's in a 2003 F150 FX4 (4x4) with a 5.4L V-8 and 9.75" rear end and borg warner transfer case if that matters.

Thanks