A how to link:
http://www.planetisuzoo.com/articles...p/Spacer_Howto


I think most would recommend it if you lift +2" and crank the torsion bars.
It will only improve things i think, I'm not sure of any downsides.

It does relieve some of the camber put into the tires by lifting the front end (flipping the ball joints sort of "kicks out" the bottom of the front tires outwards)

If you have wider tires and non-stock rims that stick out, I can see the effects being more noticeable; and tire wear and alignment more of an issue.

My $0.02.