Talking with a buddy who works on Nissans, he says if there is a difference, it will be in the thickness of the metal.
he says the bolt holes and everything else will be the same. He supposes it's because of the 4X4.

He also says the weight is off set for the trans and you have two drive shafts to mess with.
The offset weight makes it hard to get it on a jack to lift it.

If there was a way to order both plates with the understanding that you could return the one that doesn't
match, that might be an alternative.

The guy who runs Tampa Clutch is pretty knowledgeable. If you call him, ask if he would be willing to talk a little
about why the part number is different. He does a ton of truck work and can probably answer your question.

Let us know what you find out, so that the rest of us will get smarter.
Thanks.-Bob