I was actually thinking about reprinting this one because I've been so disappointed by the recent designs. I may reprint this one or make a new one for OG's only. If you're and OG then hit me up on FB.
those are only spring perch adjustable. what you want to do is remove the assist springs at the top. that will let you drop it way low. its also not gonna look any shorter because they arent on the car so there is nothing compressing the spring.