I agree, JKs suck for secure storage, esp for high-value items. I do not have CCW, but it is not needed in SC to have the weapon in the car. this is just an idea, and while not as secure, it also does not draw attention like a box and retains the access.... mount a pushbutton holster (Fiocchi or Blackhawk or something) under the seat and out of direct view.
note: in SC, las I heard, this is in the legislature now, and I have not heard a result, but as far as I know, we cannot have a gun under the seat, period. has to be out of sight, console, glovebox, trunk... can be locked and ****ed, and within reach, but out of sight, not on seat or under, Tuffy box is only option, 'cept maybe the seat cover someone mentioned with a built in pocket (Wet Okole??)
OIF ('03-'04) & OEF ('07-'08)('12-'13) Veteran