How do i 4/6 drop my 92 chevy silverado?

[Ramiro Trujillo]

i have a 1992 silverado and i want to make a 4/6 drop on it, it has been lowered because it has drop shackels at the rear and at the front it has shorter spings. anyone knows how? i would probably want to drop it the cheap way. but i want to know how