My stock 95 Maxima SE easily 3 wheeled when I had racing tires on it.  
Even with a rear wheel in the air it was perfectly stable and not at all
tail happy.

But I wonder why that web site misnames what they have a "sway" bars when
they are better known as stabilizer bars or anti-roll bars.

A sway bar is a straight rod that goes diagonally from one end of a solid
axle up to the other side of the chassis, to stop a vehicle from swaying
from side to side or wagging its tail (especially if using leaf springs).

A stabilizer bar or anti-roll bar is used to limit body roll while
smoother over bumps than stiffer springs, regardless of independent
suspension or solid axle.