Not sure on an AWD setup, but on a RWD car you want the back tight and low, and the front loose so that weight all transfers back to the rear. Some people go as far as running blown struts in front with a nice setup in back to aid weight transfer.
I would think since the SHO is AWD you would want it to be more flat, and not as much of a tilt front to back, similar to race prepped GTRs (though a lot of those guys go to RWD setups). Along with the height/stance, you can look at the stiffness of the springs. If you spin the fronts really bad try loosening the front a little and see if it hooks a bit better.