3800lb SS springs will raise it up an inch + no problem, with the front hanger bolt set in the top hole. In the bottom hole, the lift is more like 2 or 2.5 inches (ballpark).

And yes, they are made in Mexico just like every Dodge truck leaf spring has been since roughly the late 1980s. There is only one Chrysler leaf spring facility, and that's where it happens to be located.