I think the Mystery is what have you been smoking mate. Nitrous?
Looking at VF Supercharger Conversions. It the same Supercharger Lotus use but with a smaller pulley and the Intercooler is mounted behind the Side scoop rather than on top of the engine so it runs much cooler.
The figures speak for themselves. Ill have an even bigger performance boost as my car only currently has 190bhp
Oh and Fraser, that was Chris's Spray Tan