8.8 Question about gears & interchangability

I need to hear from some of the guys who are differential specialists on here. I have aset of 3.73:1 gears for a Ford 8.8 rear that were to go into a Mustang project I had but sold the car. I got the gears from a friend of mine at a Ford dealer & he said the were for a late model F-150 but that all the 8.8 rears used the same ring & pinion so they would work.

My question here is is that in fact true? Can you use the ring & pinion in any 8.8, or what are the limitations to interchangeability? I want to sell off some of the Ford stuff I have lying around, but don't want to mislead anybody who buys them.

Thanks for your help.