good to see this is up, will be a good source of info, my first input would be if you are serious about boosting your car buy this book
http://www.amazon.co.uk/Forced-Induc.../dp/1859606911
was reccomended tto me form lads on here a short while ago, im halfway through and its a cracking read, will give you all (or near enough) the info you NEED to know when staring up a project like this, very good book that is set out in lamens terms so athat anyone with some knowledge of car can understand, if you cant understand it your undertaking the wrong project