The Gen-I handling can be greatly improved in several ways:
Revalved shocks, or 3-way adjustable shocks; Spring upgrade; Swaybar upgrade (GREAT BENNIE, LOW COST !)
Most of the ACR components can adapt, but hardly any of the real GTS-R components would do so easily.
The aluminum suspension components will NOT retro-fit.
To say that a Gen-I can be made to handle like a GTS-R is a huge stretch........