I need a transmission in my 05 F150 XLT 4X4, and was wondering if i could upgrade to the 6R80 instead of going with the 4R75W. Does anyone know what all would be involved in the change? (i.e. flash the ecu, need a stand alone tcu, it won't fit because of size difference...) Just starting to look into this, so any help would be appreciated Sent from my SM-G975U using Tapatalk