Impreza WRX STI GR UK Suspension

[johnbuz]

Hi

I have a 19000 mile 2012 impreza wrx sti uk type GR saloon running about 420Hp on a forged engine built by DTR. The ride quality is !Removed!, I live in cornwall and drive mostly lanes/backlanes etc. I'm currently running 245/45/19 tyres (GT Radial Sport Active 2) on Prodrive wheels.

The suspension is stock to the car, I don't want to lower it, (it already picks up crap from the centre of the lanes) but I want to do something about the ride quality - which is awful. Drive over a pebble and you're out of the seat. I've had the geometry setup correctly for all 4 corners BTW (Only front toe was slightly out)

What would folk recommend for a more forgiving shock/spring setup?