Edit...
I'm not sure I agree with you Sewie. By adding the shackle aren't you forcing the axel away from the body of the vehicle? In essence lifting the hangers away from the ground.
I've been doing some research and it seems that the Colorado/Canyon people (Who have LOTS of lifts available
) do shackles to do the rear lift and a t-bar crank in the front. Typically this seems to yeild about 2 inches of lift on the cheap.
This sort of lift WOULD get the front hanger up away from the rocks.
Here is a pic of a Fabtech 3.5" Spindle/Shackle lift for the colorado/canyon. Only $600 too...
