Nathan,
Firstly, I live in Essex and the factory is a mere 5 mins drive from where I work.
Secondly, my car isn't built and on the road so I don't know how it handles yet.
Thirdly, there is no prescribed system. I bought just the shocks from them and gave them the specifications. They were kind enough to also make them with a slightly thicker rod (14mm). I have have just their basic shocks with singlt adjust. I bought them, as I had heard good feedback from their normal systems and they were competitively priced against AVO etc. Ultimately I will probably spend a bit on springs once the car is on the road trying out different rates, or even using a cobimation of springs like some memebers do with the the Eibach springs.
Brett