When you make a big drop typically you need to install either lowering springs or other suspension components. The cheapest option is usually is to buy a set of adjustable coil-over to achieve the drop you want.
Well. The very quickest but by far best is to simply cut your springs. Take off the your front and rear shocks/struts and then take the springs off them. Use your springs right off the car and have someone who knows halfway what to do cut them.
