Too much talk in this thread. This sounds like a job for............!
Yea, that would really be the only way to find out. The question here is handling, not which driver is better. The Genesis is not a "light chassis". In theory youve added more suspension enhancement to your car than the other has from the factory, but barely. Thats about all that can be said imo. In fact the only real enhancement was the rear sway bar. The coilovers you no doubt lowered your car with improve center of gravity but probably have spring rates at street level. Camber kit hardly accounts for anything until you get real technical with suspension tuning.
Theres no point in throwing in the idea of comparing those two to another theoretical setup.
The simple response to your cousin is that he spent 4x more on his. You can spend half that and easily outhandle it. The old question of why dont you just buy a new car when one guy is spending money modding his is to assert superiority or some degree of coolness and kiddish to top it off. Not gonna lie, id joke about it too. :mrgreen: All about fun guys!