Polyurathane or aluminum subframe bushings (which also just about totally eliminates wheel hop). Then I would go with some eibach springs and either stock TT shocks or some Gab 8 way's. Some adjustable tension rods...Stillen, SGP, an a few other companies make them. Then the only thing you need after that is a roll cage! For the HP your pushing you'll need one if you ever plan on racing your Z in the 1/4 mile...and it will really stiffen up the chasis.