when i ride over bumps or push down on my car above the front right tire it squeaks like my shock or something is bad anyone have a suggestion on where to start, what do you guys think it is a bushing or sum?

 

also i feel like my car just rides like ****, i hate all the lttle nioses out of the suspension what should i do shocks and springs all the way around? koni? what you guys think? my car is already lowered,it has bilstein shocks or are those shocks standard? its a 2000 trans am not a ws6. i like the aggressive stance where its just a lil bit taller in the back to make it look mean.. any help would be awesome thanks guys.