Easy, cheap, good: pick any two...
Check out NAGCA and search for "front to rear lift". Basically you take the front springs and put them I the rear and get new front springs. This will give you about 3-3.5" o lift and then you will need to address trackbars, drive lines, sway bars, etc.
If you just want a little left for bigger tires a 2" spacer lift is the way to go.