Turbo for ZX10R, how?

Im sorry that I speak english, but I start this topic for my friend in Poland plus my swedish is not too good I hope you dont mind...
Anyways, he wants to put a turbo in his Zx10R to get around 250 hk, the problem is that Turbos are not popular at all in poland so he doesnt know how to start...is it better to buy a ready to install kit or to build it alone? Any one who could explain how to do it step by step? Which kits are best?
He would be very thankfull for an anwser!

Muzzy's offer a ZX10R turbo kit with an output of 500 bhp.

http://www.muzzys.com/ZX10/ZX10_Turbo/index.html

The figures might be a tad optimistic if you ask me. But who am I to judge. Hear with them.

http://www.google.se/search?q="zx10r turbo"
http://www.bigccracing.com/UserFiles/Image/Copy of DSC00828.jpg

However, a turbo is a turbo is a turbo.

andersbrink skrev:

2604863 http://www.google.se/search?q="zx10r turbo"
http://www.bigccracing.com/UserFiles/Image/Copy of DSC00828.jpg

However, a turbo is a turbo is a turbo.

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Vad tror du om Muzzys? Det måste vara bull? 500 bhp är mycket.