I cannot believe I found this.
Whiteline rear 20mm 3-way adjustable swaybar kit (says it fits 1989-1994 AE90, AE91, AE92, AE95 Corollas), with bar to body bushings and adjuster hardware, minus endlinks - $42.81 each plus $7.99 shipping! I ordered one up on the spot (my GTS has a 14mm stock rear bar) - mine's shipped and on its way. I got mine, now get yours before they're all gone.
I'm not a shill, just luckily discovered this part on sale for an unbelievably low price. It's on Ebay too but shipping there is $19.99. I searched around a bit and found these selling for +/- $250 in a couple of other places.