Suspension diagnostics

Hello everyone. I am experiencing some front suspension issues and I would like some help in identifying which components are to blame. My car rides great and handles like always but when I hit a bump at speed it feels like there is no suspension. Also when going over large dips in a road the front seems to sag and the plastic dam in the front scrapes on the pavement. Visual inspection does not show me anything.
I am guessing maybe shocks need replacement but what do y’al think. And if it is shocks which brand should I be looking at?
1998 XK8 convertible, 54,000 miles

I suppose the first thing to determine is if the car has CATS suspension fitted?
Personally I would try to stick with what brand is on the car. Jaguar knew what they were doing :slight_smile: