faz3.0xtype

Hi All, I am new here but am looking for some advice. I have recently bought a reaching metallic British racing green jaguar 3.0auto AWD. it's a 03 plate with 50k on the clock and has all the extras including leather interior, heated seats, satnav and touch screen control. I absolutely love it and plan to keep it for a long time investing in it with a money no object, my pride and joy approach..... The question I have for the seasoned owners here is... What is the best way to improve the suspension and brakes on the car? The front suspension feel clunky and the brakes squeak embarrassingly (the other day a lay walking down the street thought I was whistling at her as I embarrassingly braked) Any advice on upgrades and links to ordering parts deeply appreciated.