I down loaded the build sheet for the used Ram I purchased.
Optional Equipment
Raised Ride Height
So I have to assume it has some sort of lift from the factory?
Its a pretty mysterious "option". Some (a lot) trucks have it, some dont.
Not sure anyone has traced it down to exactly what it really is, but it seems like raised ride height trucks are ~1" higher off the ground than trucks without that on the build sheet. There didnt seem to be a rhyme or reason as to which trucks got it, though. Some 4WD have it, some dont. Some 2WD have it, some dont. Some 20" wheeled trucks have it, some 17" wheeled trucks have it.
The option code is XZNP and it seems like XZNP trucks use a certain spring thats different than other trucks, so the theory is that the truck is higher just because of the different coil springs.