I cut the front and back stock springs.
I went from 27.3/4 in the front to 26.1/2 3/4 coil removed 1.1/4 drop.
I went from 27.7/8 in the rear to 27.1/4 1/2 coil removed 5/8 drop.
The front works just fine but the rear spring will not sit on the perch as it was intended to after you flat top half is removed. I have had it installed for a few months now and it works,no noise but knowing how its in there doesn't sit right with me. I purchased 2 rear H&R super sport springs from a fellow Mach owner and there on there way as we speak. I am hoping they lower it a tad more but I know in either case that will seat right.They can be purchased here rear only if you choose.
http://www.maximummotorsports.com/HR...ngs-P1420.aspx
I know this is a lot of info, I just wish someone would have spelled this out before I started.