nice to see some decent work there Click here to enlarge.
1st off, ditch the stock turbo it's crap (and they are over boosting it anway with those levels by the sound of it) and drop a vxr turbo in.
the vxr turbo costs round the 1200 mark landed, and will still be 20% higher flow then a high flowed stockie Click here to enlarge.

mr turbo are good, i get parts from them, but neva had work done there.

there is room for a bigger turbo, trust me Click here to enlarge.

i have a garrett gt35/40r on mine, hehehe.