Two options,

#1 is a Tacoma front bar, flipped upside down, behind the axle w/ custom mounts.

#2 is a rear sway bar (Addco makes one), bolts on and work well.

I think ErikB has a writeup on #1, I had the Addco rear bar installed for a few months on my '85 and it worked great. Once I get my rear axle sorted out, it'll be going back on w/ disconnects.