i have a 2ltr zetec with a jackson racing supercharger. yes it is possible to supercharge the v6. theres a guy on meg (mondeo enthusiasts group) with a supercharged st200 putting out around 400bhp but he has fitted the later 3ltr v6 engine.

i shopped around on ebay and bought some drilled and grooved st170 discs from ebay seller mtec others on meg have used him too and i've not heard any bad reports back. i bought some greenstuff pads again from ebay, shop around as prices vary. the calipers i got from a scrapped mk3, gave them an overhaul and a lick of paint and they are fine.

found a link to a supercharger kit for the v6 duratec http://www.3lduratec.com/supercharger.html