For that hp you are going to have to add a power adder for the price range, turbo charged or supercharged. A full supercharged kit will probably take up all your budget sadly and only get you possibly around 260 or 270 maybe. Plus you will probably have to rebuild the motor to accommodate for the supercharger possibly.
http://www.v6power.net/dyno/
Is a good site to just find what others have done to obtain their horses.
http://www.v6power.net/dyno/
Is a good site to just find what others have done to obtain their horses.