To be honest I am not looking to lower my car or make it stiffer.

I just want it to handle like it should.

I drove over a cobbled road at around 15mph and the interior shook like an earthquake.

Even over rough surfaces its vibrating horribly.

At first I told myself thats the standard situation with high performance car but after a few days I just can't take it anymore.

I have no experience on handling and have no ideas what to do.

I just want it to be drivable for day to day use.

It grips very well on corners etc but any road that's not perfectly smooth will give my bum and spine a hard time.

Another thing that iritates me is the faint knocking sound heard when I'm driving.

It's pretty random and its hard to pinpoint where its from.

The best explanation I can give is like when a hard object is bouncing around your boot

(my boot is empty).

It sounded like

"gluk-gluk-gluk-gluk.

.

.

".

Finally all that shaking is also causing my interior to rattle like mad

Sorry for the rant.

.

.just feeling lost and don't know what to do next.
