All the custom pipework (prolex were selling this) including the compressor bypass assembly and throttle cable, supercharger bracket, some kind of induction kit or the TTE airbox, intercooler, pulley + belt and HKS FCD.
You would also have the drill and lock down the supercharger clutch assembly. It would work out very close to £2k.
Ed
might be a way to go to get a supercharger, there is a supercharger on ebay from a kompresser at the moment for $300
http://cgi.ebay.com/ebaymotors/Mercedes-C-...sQ5fAccessories
and the HKS FCD on prolex for £100
http://www.prolex-uk.com/store/product_inf...9f46fd7d8119b9a