Bel, do the clutch, sticky tyres and take out unneccessay things like spare tyre, jack, do the bleed valve (boost control), good exhaust, bov, etc. If you really want some more power look for a second hand high flow turbo or a t3/t4. you can get them for 800 bucks and will give you at least 300-320hp at wheels and 12's
Niz, I was doing 150 on river side drive and cops were on other side gazing off across the river:) ..Me lucky