S14’s usually rust at these spots:
-drivers side strut tower at the frame rail
-top corner of the strut towers that’s closest to the fender
-rear wheel arches, just above the tires
-behind the trunk lid, just above the rear bumper
-both rocker panels (especially if it has a sunroof)
-underbody, right below the rear passenger seat where one of the subframe studs is. Basically a little corner just before the gas tank.
-and of course the frame itself.
Those are the usual spots on S14’s where rust starts first. At least from what I’ve seen…