I have a 2002 Firebird Formula which drives like a dream but it does not have the WS6 suspension (which I can feel when drivig).

How, or want do I add to the '02 to make it handle like it has a WS6 suspension?

Shocks,springs,wheel/tires,bushings,& sway bars.

Thanks..................................

Add a 32mm front swaybar and some 17x9" wheels and you'll be equal to the `01-02 WS6 setup. The `96 to early `00 WS6 cars received stiffer 1LE springs as part of the package. These Springs were discontinued after Jan 2000, and subsequently all later WS6/SS cars used the same springs as base V8 cars.
Forget about the WS6 equipment and move up to some better aftermarket springs, quality shocks and larger swaybars. My current setup of Strano Spings Koni shocks and Strano 35/22 Swaybars is well beyond the WS6 stuff.