if you have an overdrive button on the end of your shifter and a D,2,1 in the dash, you'll probably find that the door jamb code is a "U". If it is you have an AODE-W. (AODE-W also has a squarish trans pan)
If not, it's an E4OD (has a more regtangle trans pan with 20 bolts). Really the only 2 automatic 4 speed transmissions Ford used with our year trucks and pushrod engines.
It's NOT a 4R70W, they were only used with modular (4.6/5.4L) engines. I don't care what website you saw it on.