+1 for MCAs.
MCA Suspension | The official website of MCA Suspension
I have the red series on my GC8. Made a huge improvement to the handling. Can't wait to get some new tyres on it and see what time she does around the track.

If you haven't already read Rex On Rails. Whiteline has pdf copies in their articles section and helps to understand how each suspension components affects the handling.
Whiteline Performance Suspension – Activate More Grip