i think this goes with this
RSK Suspension Kits
The Koni Special is specifically designed to give a safe and secure ride, improving road handling at high speed and controls stability when towing caravans and heavy loads and is also adjustable to compensate for wear
£289.36 (inc VAT)
Koni
SSK Suspension Kits
Koni Sports dampers are for the sporty driver: for lightning acceleration, effective braking, reliable steering at high speeds and extreme driving conditions - enabling you to get the most out of your car with some applications being extremely adjustable.
£374.47 (inc VAT)
this price was from both europerformacedirect and motorsport world
both same prices i think europerformace there description is wrong... on the special version
hope this helps
i will be calling motosport and talking to them as they have been helpful in the past with friends