i am looking at coilovers, and they say they are adjustable from 0-4". when i was talking to a kid the other night he said it can only go 2" lower, but there is 4" of movement, cause you can go 2" down, or back to stock...yeah, it sounds stupid. basically all i want to know is are coilovers really able to drop your car 4"? please help, thanks.