My suspension is fully stock so my car rolls and tilts all over the place. Everytime I take an agressive right/left turn on my '98 200sx se it feels like somebody keeps pulling me to the other direction, damn gravity

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I know that lowering would improve cornering but I want to leave the springs/shocks alone untill I get some rims. Ground Control offers a package deal with a set of coilovers/shock/strut combo. Could I get a deal out there that offers Strut/sway bars? Or would I have to get em' piece by piece from different brands?
Any little info would help me, my knoledge about suspension is very minimal.<<newbie