I am located in Southern California, thanks for the input I really appreciate it.You should always be concerned about rust. Rust never sleeps. Rust is always working away at making rigs disappear. Rust will cut you, fight you, lock up fasteners and joints. Rust will separate panels and spot welds. Rust is inevitable. Rust waits for no man.
That xj looks really clean, except for the surface rust on everything in your pics. What does the bottom side of the unibody rails show? There are a couple spots that usually get soft first. How about floorpans?
Where are you located? That could be the difference in me buying stock in FluidFilm or me letting the surface rust go for a few years on that one.