Has anybody seen this thread over on the FJ forum:
Front Sway Bar Sliding Links - Deconstructed | Toyota FJ Cruiser Forum
Looks like some people have been building their own sliding style sway bar disconnect. Looks cool, though I'm not sure its worth the hassle compared to just an adjustable sway bar end link.
While I know a lot of people on this forum just run with no sway bar, my past experiences take that option off the table for me lol.