Coilovers???

Can someone explain to me the set up with coilovers...do you need to buy springs, shocks, and the coilovers...are are the coilovers the whole system??? I have no knowledge of any suspension work for my 2001 4banger and want to get a nice drop...thanks

Coilovers replace your springs.. Just like aftermarket lowering springs.. just that they alow height adjustment. It is recommended that you replace your struts.. for better ride quality, but it is not required..