NE1 have suspension techniques lowering springs?

[Brent Barts]

Hi guys-looking through the jc whitney catolog and found the suspension
techniques lowering springs-not sway bars but springs.  Has anyone tried
these out?  I noticed they have two different heights of 1 inch to 1.5 inch.
I don't wanna lower my car too much as it's almost too low for montana as it
is.  How about spring rates?
Ne1?
Thanks
Brent
91 se-Rt pulsar det with bugs and loud-ass exhuast