2006 ford f150 differentials difference and match?

I have a doubt about diferential in my 2006 ford f150 5.4L. Recently my truck was hit while parked on the street and the whole damage was in the rear end diferential so the rear end suspension is totaled and I need to replace it to start using it again. I wanna buy the whole thing but I'm not sure was the difference between all the gear ratios and if they affect the performance. Are all the ford similar trucks a direct fit like example is the expedition diferential a direct fit to my truck or the e 150 van a direct fit to my truck? If you have a real answer to this topic I will really appreciate your help. If you don't have an idea what I'm talking about please save your comment

If you have 4 wheel drive, you MUST make sure both the front and rear match. There also should be a tag on yours with the current ratio. Best bet is to just replace it with the same set.

The Expedition uses the same chassis. The axle should match. A junk yard can tell you what options you have.

You're going to have to get another axle from a vehicle with the 5.4L. The 4.2L and 4.6L F-150's and vans used the 8.8 inch axle while the 5.4L F-150's and vans used a 9.75 inch axle. And as Parker mentioned, if you have a 4WD truck, you'll have get one with the same axle ratio.