So if I go with anything less than a 1.5" drop, I don't have to change anything else...

But if I go over 1.5" drop, I should change my struts?

Can anyone recommend a good spring under 1.5" if that is true, cause I'd rather not change my struts right now...

it's not so much the lowering as much as the difference in spring rates from when you change to an aftermarket spring from your stock one. the spring rates are much higher on aftermarket springs and the valving on your stock struts just can't handle all the action that's goin on.

for any aftermarket spring, i would say aftermarket struts are needed.....