Hi Larry,
The transmission on either vehicle would be the same. Actually, the tail housing would be different to accommodate the transfer case on a 4wd, but the transmission itself is the same. Also, servicing is done the same as well.
If you are concerned, I attached the directions below for changing the fluid, filter, and pan gasket. This is from a 5.4L The 4.6L is similar.
Let me know if this helps or if you have other questions.
Take care,
Joe
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Friday, July 22nd, 2022 AT 10:10 PM