Coilovers/Springs+Shocks recommendation for drifting

[mjnck]

Hello, im building w202 c230k for amateur drifting, and now i'm running cut stock springs but they are little bit too soft, anyone have recommendation for some stiff coilovers with adjustable shocks?
Also from which mercedes (propably some w210) can i take front and rear sway bar which will be as stiff as possible :) ?

[berwyn83]

KW V2. This coilover is pricey yet can improve ride quality. It features an adjustable rebound dampening.