as an owner of a 996 GT2, I understand what you mean about feeling unsafe at high speed.
These car are extremely sensitive to alignments. a small change in setting will result at a very big change in feeling and handling.
I prefered to setup my car to be more nimble but it is still very darty and every small touch of the steering at high speed will result in a direction change.
Another thing to remember is the huge tires on the back, which tend to follow any imperfection on the road.
Shamless plug - the GT2 is for sale.. need a 4 door
