You would not believe how many people think Jeep used to, plans to, or is currently importing vehicles from a Chinese manufacturing plant- and the cries of outrage at MURICAN manufacturing going away that go along with that. While I felt you probably weren’t among that contingent, it was as good a chance as any to put it out there for the next guy.
CJ7s did indeed have an optional Quadra-Trac 4WD. Can’t remember the t-case model number, but you can identify between them by the rear driveline. 70s-80s Quadra-Trac has the rear output in line with the front output, rather than centered as the standard Dana 20. (And the other 4 or 5 versions of Quadra-Trac that followed)