aggressive stance

I would like to change the shocks and springs, the car is sagging in the rear, and the shocks in the front are cracking. Where is the spring in the front? I don't understand, is the spring contained in the shock? Anywho, how can I improve it's stance, I want the rear up a little bit to make it look a lil meaner. Let me explain my thoughts. I bought this car to fullfill all of my thoughts on what i have wanted for years. I want a mean, cammed up motor, A six speed manual, a racing inspired interior and the paint whatever color I feel like. I am not following any guidelines, just want a muscle car/hotrod.